Answer:
Superior mesenteric artery.
The primary source of energy for the body is a form of sugar called glucose. It travels to cells all throughout the body after being absorbed into circulation from the small intestine.
Other chemicals that enter the circulation through the small intestine include the following:
Proteins' building components are amino acids.
The lipids' building components are fatty acids.
minerals and vitamins
Water
In an adult, the small intestine is a muscular tube that is roughly 20 feet long. It is situated in the belly, above the large intestine, and below the stomach. The bulk of digestion and nutritional absorption from meals occurs in the small intestine.
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uranary system in human
Urinary system remove waste product from body and regulate blood pressure.
Urinary system is also known as renal system.Urinary system in human consist -
KidneyUreters Urinary BladderUrethraKidneyThese are two in number.Kidney form urine by filtering the blood.Both kidney are situated in vertebral column.Each kidney is surrounded by three layer of tissues.These are deep red bean like structure.Nephrons are the structural and functional unit of kidney.UretersFrom oncase surface of kidney tubes like structure come out which is known as ureter.Each you readers coming out from each kidney pours the urine into urinally bladder.Urinary BladderIt is urine storage organ.The urine passes from kidney through ureters into sac like urinary Bladder.UrethraUrethra is tube like structure through which urine is passed from urinary bladder to outside the body.Some other urinary system
SkinLiverLungsLarge IntestineSalt glandHope its helpful
Unit 1: Biomolecules
1. Carbohydrates: Food is____ Digest into____
2. Lipids: Food is______Digest into____
3. Proteins: Food is_____Digest into_____
The Vi antigen found in?
A-Staphylococcus
B. E coli
D- Citrobacter
C-Streptococcus
What will be the equation of a hyperbola that satisfies the given conditions having Foci at (±27,0) and the length of the transverse axis is 4.
The equation of a hyperbola that satisfies the given conditions is (x - a)² / a² - (y - 0)² / b² = 1.
How to determine equation of a hyperbola?The equation of a hyperbola with foci at (±a,0) and a transverse axis of length 2c is given by:
(x - a)² / a² - (y - 0)² / b² = 1
where a = distance between a focus and the center of the hyperbola, and b = distance between a vertex and the center of the hyperbola.
In this case, a = 27 and c = 4.
Substituting these values into the equation above, the equation of the hyperbola becomes:
(x - 27)² / (27)² - (y - 0)² / (4)² = 1
Simplifying, gives the equation:
(x - 27)² / 729 - y² / 16 = 1
This is the equation of the hyperbola that satisfies the given conditions.
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Examples of processes requiring ATP
Answer:
muscle contraction, for active transport, cell division, transmission of nerve impulses and synthesis of protein
In a pond ecosystem, fish release ammonia as an excretory product, which is highly toxic.
Ammonia can make water unfit for the survival of the fish and other aquatic organisms.
However, in nature, the level of ammonia in ponds is generally maintained at low levels.
What helps in maintaining the level of ammonia?
O
Ammonia is converted to elemental nitrogen by bacteria present in the root nodules
of water plants.
Ammonia is converted by bacteria into nitrogen compounds that can be consumed
by plants.
The salts in pond water react with ammonia, causing it to settle on the bottom of
the pond.
The leaves of water plants absorb ammonia, removing the toxic substance from the
pond water.
The statement "Ammonia is converted by bacteria into nitrogen compounds that can be consumed by plants" describes how ammonia in ponds is generally maintained at low levels.
What is ammonia?Ammonia, an odoriferous colorless gas, represents the most elementary and enduring fusion of nitrogen and hydrogen. This ubiquitous nitrogenous byproduct, predominantly found within aqueous organisms, plays a pivotal role in satiating the nourishment requirements of terrestrial life forms.
Notably, it serves as a foundational building block for an astounding 45% of the global food supply and fertilizers, thereby exemplifying its paramount significance.
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how do soil negatively affects landforms,plants,animals and humans?
Explanation:
increased pollution and sedimentation in streams and rivers, clogging these waterways and causing declines in fish and other species. And degraded lands are also often less able to hold onto water, which can worsen flooding
Answer:
The effects of soil erosion go beyond the loss of fertile land. It has led to increased pollution and sedimentation in streams and rivers, clogging these waterways and causing declines in fish and other species. And degraded lands are also often less able to hold onto water, which can wo
Explanation:
What is bacteria most resistant to radiation?
A-proteus
B-Alternaria
C-streptococcus
d- lactobacillus
Answer: The answer will be different.
Deinococcus radiodurans is most resistant to radiation.
critically discus 1 community responsibility to ensure healthy and clean environment
One community responsibility to ensure a healthy and clean environment is waste management.
Proper waste management practices are crucial for maintaining a clean and sustainable environment. Here are some critical points to consider:
Reduce, Reuse, and Recycle: Communities have a responsibility to promote and educate their residents about the importance of reducing waste generation, reusing items whenever possible, and recycling materials.
Proper Disposal of Hazardous Waste: Communities should establish systems for the safe disposal of hazardous waste, such as chemicals, electronic waste, and medical waste.
Waste Segregation and Composting: Encouraging residents to segregate their waste into different categories, such as recyclables, organic waste, and non-recyclables, helps in effective waste management.
Thus, it's important to note that ensuring a healthy and clean environment is not solely the responsibility of the community but also requires government support, adequate infrastructure, and regulatory frameworks.
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how to Plasmid DNA is also used to monitor bacterial transformation with foreign DNA.
Plasmid DNA serves as a valuable tool in monitoring bacterial transformation as it allows for the easy introduction and expression of foreign DNA in bacterial cells, providing researchers with a means to study and manipulate genes of interest.
Plasmid DNA is commonly used as a vector in molecular biology experiments, including monitoring bacterial transformation with foreign DNA.
Here's a general overview of how plasmid DNA is utilized to monitor bacterial transformation:
Selection of Plasmid: Choose a suitable plasmid that contains a selectable marker, such as a gene for antibiotic resistance. This marker allows for the identification and selection of transformed bacterial cells.
Insertion of Foreign DNA: The foreign DNA fragment of interest is inserted into the plasmid using molecular cloning techniques. This can be done by cutting both the plasmid and the foreign DNA with specific restriction enzymes and then ligating them together.
Transformation of Bacteria: Bacterial cells are made competent, meaning they are treated to increase their ability to take up foreign DNA. The plasmid containing the foreign DNA is then introduced into the competent bacterial cells, typically by heat shock or electroporation.
Incubation and Selection: The transformed bacteria are plated onto a growth medium containing the appropriate antibiotic that the plasmid carries resistance to. Only the transformed cells that have successfully taken up the plasmid will survive and form colonies.
Analysis: After incubation, the resulting bacterial colonies are analyzed to confirm successful transformation with the plasmid containing the foreign DNA. This can be done through various techniques such as PCR, restriction digest analysis, or DNA sequencing.
By monitoring the growth of bacterial colonies on selective media, researchers can determine the efficiency of the bacterial transformation with the foreign DNA. The presence of the selectable marker (e.g., antibiotic resistance gene) in the plasmid allows for the identification of transformed bacterial cells, while the absence of growth in non-transformed cells indicates that they were not able to take up the plasmid.
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reasons why science teachers think practical sciences is a good thing.
rubric
identify reasons 4 marks
explanation and practical example 16 marks
Science teachers consider practical sciences to be a valuable component of science education for several reasons:
Hands-on Learning: Practical sciences provide students with the opportunity to engage in hands-on learning experiences. This approach allows students to actively explore and manipulate materials, conduct experiments, and make observations.
Example: In a biology class, students may conduct a dissection of a preserved specimen to study the anatomy and structure of organisms. By physically dissecting and examining the different organs and systems, students gain a tangible understanding of the subject matter.
Application of Theory: Practical sciences enable students to apply theoretical knowledge acquired in the classroom to real-world situations. By engaging in practical activities, students can bridge the gap between abstract concepts and their practical applications, fostering a more comprehensive understanding of scientific principles.
Example: In a chemistry class, students might perform experiments to understand chemical reactions and concepts like stoichiometry. By actually mixing and observing different substances, measuring quantities, and analyzing the results, students can see how theoretical concepts translate into practical applications.
Development of Scientific Skills: Practical sciences help students develop essential scientific skills, such as critical thinking, problem-solving, observation, data analysis, and communication. Through practical activities, students learn to formulate hypotheses, design experiments, collect and analyze data, draw conclusions, and communicate their findings effectively.
Example: In a physics class, students could design and conduct an experiment to investigate the relationship between force and motion. By planning the experiment, taking measurements, analyzing the data, and presenting their findings, students enhance their scientific skills and develop a deeper understanding of physics concepts.
Engagement and Motivation: Practical sciences often increase student engagement and motivation in science education. Hands-on activities provide a more interactive and dynamic learning environment, making science more interesting and accessible to students. It can spark curiosity, promote active participation, and cultivate a sense of wonder and excitement about the natural world.
Example: In an environmental science class, students may visit a local ecosystem to conduct field observations, collect samples, and analyze the data they gather. By immersing themselves in the real environment and actively participating in the scientific process, students are more likely to be motivated and engaged in their learning.
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End-of-chapter questions Which of a-d below is an example of i diffusion, ii osmosis, or iii neither? Explain your answer in each case. 1 a b C d
a. Water moves from a dilute solution in the soil into the cells in a plant's roots.
b.Saliva flows out of the salivary glands into your mouth.
c.A spot of blue ink dropped into a glass of still water quickly colours all the water blue.
d. Carbon dioxide goes into a plant's leaves when it is photosynthesising.
Answer:
a. is an example of ii) osmosis.
b. is an example of i) diffusion
c. is an example of i) diffusion.
d. This is an example of i) diffusion
Explanation:
a. This is an example of ii) osmosis. Water moves from a dilute solution (low solute concentration) in the soil into the cells in a plant's roots (higher solute concentration) through osmosis. The movement of water occurs across a semipermeable membrane, which allows water molecules to pass while restricting the passage of solutes.
b. This is an example of i) diffusion. Saliva flowing out of the salivary glands into the mouth involves the movement of solutes (salivary components) from an area of higher concentration (glands) to an area of lower concentration (mouth). This movement occurs due to diffusion, which is the natural tendency of particles to spread out and reach equilibrium.
c. This is an example of i) diffusion. The blue ink dropped into a glass of still water disperses throughout the water, coloring it blue. This dispersion occurs due to the random movement of ink particles, spreading from an area of higher concentration (spot of ink) to an area of lower concentration (water). It is an example of diffusion.
d. This is an example of i) diffusion. Carbon dioxide diffuses into a plant's leaves during photosynthesis. Carbon dioxide molecules move from an area of higher concentration (surrounding air or atmosphere) to an area of lower concentration (inside the leaf) through diffusion. The process of diffusion allows the plant to obtain the necessary carbon dioxide for photosynthesis.
How does the mass of the paper helicopter affect the time it takes to fall 2 meters? in 250 easy words
Answer:10
Explanation:
200
The _____ is the basic unit of life. Responses A cell B heart
Answer: The cell is the basic unit of life.
Explanation:
What do we know about the coding of mRNA that makes E. crassus the exception to the rule of protein synthesis?
Answer:
UGA is the codon in the mRNA that makes E. crassus the exception to the rule of protein synthesis, that is: insertion of gene for synthesis of two different proteins.
pollination by insect process in pride of barbados. I need the explanation ASAP
The Pollination by insect process in the pride of Barbados takes place by butterflies.
The pride of Barbados also called the Red Bird of Paradise is a popular plant in Phoenix. It originally hailed from the tropics of South America and the West Indies. It is a tall shrub that grows and can be identified by its distinctive red/orange colored flowers that possess very long stamens and are differently visible.
Its leaves are lacy compounds. It generally grows more during warm weather, especially during the summer months. The long stamens are the male parts of the flower and carry the pollen grains to be pollinated. These are pollinated by insects like butterflies and then are turned into seed pods which are dried and shot open to produce a new plant.
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Benefits of family planning
QUESTION 2: Sipho is a 15-year-old boy who lives in a rural village in Kwazulu-Natal with his parents and two younger siblings. Sipho's father is a farmer; his mother takes care of the household and works as a part-time seamstress. Sipho is the eldest child and is responsible for helping his parents with farm work and caring for his younger siblings. He attends a local high school and is currently in Grade 9. Sipho's family faces financial challenges and struggle to make ends meet. Despite this, they are a close-knit family and support each other as best they can. Sipho's parents value education and encourage him to work hard in school, hoping that he will be able to secure a better future for himself. Sipho's school is quite a distance from his home, and he must walk for almost an hour to get there. He often arrives at school tired and hungry, as there is not always enough food at home. Sipho enjoys spending time with his friends at school, but he finds it challenging to concentrate class due to hunger and fatigue. He has trouble completing his homework and struggles to keep up with the pace of the lessons. Sipho's father is a traditionalist and insists that Sipho learn traditional farming practices and customs. He believes it is important for Sipho to understand his cultural heritage and be proud of his roots. As a result, Sipho spends a significant amount of time working on the farm, learning about the land and how to cultivate crops. Despite his father's insistence on traditional farming practices, Sipho is interested in learning about modern agricultural techniques and hopes to pursue a career in agriculture. He often reads books about farming and the latest farming methods, which he borrows from the community library. Sipho's mother supports his dreams but worries that he will not be able to achieve them due to their financial situation. She encourages him to focus on his studies and work hard to secure a better future for himself. Sipho's teachers have noticed that he is struggling in school and have suggested that his parents seek assistance from the community or neighbours to help him with his studies. They believe that with some support, Sipho will be able to reach his full potential and succeed academically.
QUESTION:
1 .According to Bronfenbrenner's ecological theory, what are the different systems that influence Sipho's development? Explain the possible assets in each system as represented in the case study and based on Bronfenbrenner's. (10)
2.According to the African perspective, as discussed by Tabane (2016), what are the different systems that influences Sipho's development? Explain the possible assets in each system as represented in the case study and based on Tabane (2016). (10)
3. Based on Bronfenbrenner's theory, what support systems could be put in place to help Sipho overcome his academic struggles? (5)
4. According to Bronfenbrenner's theory, how might Sipho's experiences in his differ systems influence his future career choices and opportunities?
Numerous systems are identified in Bronfenbrenner's Ecological Theory as having an impact on Sipho's growth. They are the macrosystem (culture context), exosystem (external environment), microsystem (family, school, peers), mesosystem (interactions between various components), and chronosystem (historical context).
In these systems , Sipho benefits from a loving family that values education, supporting friends, and a creative school. His contacts with his family, friends, and instructors offer him support and direction, and he also indirectly gains from resources from outside sources like the local library and understanding teachers.
The traditionalist father of Sipho aids with his appreciation of cultural heritage. His scholastic difficulties may be resolved by creating a friendly environment, offering instruction, food, and financial help, and utilising Sipho's experiences. Sipho's future job options are ultimately shaped by these institutions, with his family, instructors, and community resources offering him.
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1. Offer a possible evolutionary explanation for how the bones of animal limbs can have a similar
structure, but very different functions.
Answer:
The bones of forelimbs of whale, bate, cheetah, and man are similar in structure because they are homologous organs. The organs which have the same fundamental structure but are different in functions are called homologous organs. These organs follow the same basic plane of organization during their development. But in the adult condition, these organs are modified to perform different functions as an adaptation to different environments. The homologous structures are a result of divergent evolution. Homology indicates common ancestry, so they share a common ancestor.
Why do oestrogen levels between 8and 22days remain low in the women who takes contraceptive pills
Contraceptive pills suppress ovulation and keep oestrogen levels low throughout the menstrual cycle, preventing pregnancy.
The contraceptive pill contains synthetic hormones that mimic the effects of oestrogen and progesterone in the body.
These hormones work to suppress the natural production of oestrogen by inhibiting the release of follicle-stimulating hormone (FSH) and luteinising hormone (LH) from the pituitary gland.
This prevents ovulation and therefore reduces the levels of oestrogen that are normally produced during the menstrual cycle.
The low levels of oestrogen between days 8 and 22 of the menstrual cycle in women taking contraceptive pills are due to the fact that this is the time when oestrogen levels would normally peak in a natural menstrual cycle.
However, as ovulation is suppressed by the pill, there is no need for the body to produce high levels of oestrogen to support the development of the ovarian follicle.
Instead, the pill maintains a consistent level of synthetic hormones throughout the cycle, which prevents the fluctuation of oestrogen levels that would occur naturally.
Therefore, women who take contraceptive pills typically have lower levels of oestrogen throughout their menstrual cycle.
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1. Compare and contrast the endocrine (hormonal) system and nervous system in detail (at least one page 2. List the main endocrine glands (pituitary, thyroid, pancreas, adrenal and gonads) and describe their main functions.
Effective
Enzyme Temperature
Range (C)
A
B
с
D
60-80
30-40
20-38
20-27
Optimum
PH
A. Decrease the pH with the addition of an acid
B.
Increase the pH with the addition of a base
C.
Decrease the temperature to 60°C
D. Increase the temperature to 90°C
3
3.5
9
7
Enzyme A is currently functioning at a temperature of 75°C and a pH of 7. According to the
information provided in the chart above, which of the following would increase the rate of
function of enzyme A?
The rate of function of enzyme A can be increased by decreasing the pH by adding an acid.
What is the effect of temperature and pH on enzyme activity?As the temperature increases, enzyme activity generally increases due to faster molecular movement and higher collision rates between the enzyme and substrate.
However, beyond the optimal temperature for each enzyme, the activity starts to decline rapidly.
Enzymes have an optimal pH range in which they function most effectively. Going beyond or below this pH range can impact the enzyme's structure and alter its ability to bind to the substrate.
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Choose the clause that would be used to decide each case.
1. A religious high school wants to receive government funding.
2. A state passes a law that bans a form of worship used by a religion.
3. A religious organization does not pay tax on religious items.
4. A city government building installs a sculpture promoting a specific religion at its entrance.
The clauses that would be used to decide each case are:
Free Exercise ClauseEstablishment ClauseWhat are these Clauses?Establishment Clause. The government cannot establish a religion or favor one religion over another. Therefore, the government cannot fund a religious school.
Free Exercise Clause. The government cannot interfere with the free exercise of religion. Therefore, the state cannot ban a form of worship.
Establishment Clause. The government cannot tax religious items. However, the government can tax religious organizations on their non-religious activities.
Establishment Clause. The government cannot promote a specific religion. Therefore, the city government cannot install a sculpture promoting a specific religion at its entrance.
The Establishment Clause and the Free Exercise Clause are two of the most important clauses in the First Amendment. They protect the right to freedom of religion, which is a fundamental right in the United States.
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The Establishment Clause and Free Exercise Clause of the Constitution would be used to decide the cases involving a religious high school wanting government funding, a state passing a law banning a religious practice, a religious group not paying tax on religious items, and installation of a religious sculpture in a government building.
Explanation:The following constitutional clauses would be used to decide the respective cases:
Establishment Clause and Free Exercise Clause: A religious high school wanting to receive government funding would involve an analysis of the Establishment Clause (which prohibits the government from making any law 'respecting an establishment of religion') and the Free Exercise Clause (which reserves the right of American citizens to accept any religious belief and engage in religious rituals).Free Exercise Clause: A state passing a law that bans a form of worship used by a religion would be likely examined under the Free Exercise Clause, which guarantees the right to practice one's religion free of government interference.Establishment Clause: A religious organization not paying tax on religious items would be subject to the Establishment Clause, or perhaps statutory tax law.Establishment Clause: A city government building installing a sculpture promoting a specific religion at its entrance would also fall under the scrutiny of the Establishment Clause, as it suggests the government is endorsing a particular religion.Learn more about Constitutional Clauses here:https://brainly.com/question/31866476
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helppppppppppp
.............................
Watch the video titled Rat Park attached below, and then answer the reflective questions outlined below. (Health Psychology) 1. Do you feel Rat Park could work in our society? Why or why not? Explain your answer.
2. How can we begin to change societal perspective on addition?
3. The idea of connection is brought up in the video clip, do you feel that this is an effective strategy to align drug rehabilitation and reduction methods with?
The Rat Park experiment by Bruce K. Alexander studied how environment and social connections affected rat drug addiction. Giving rats an enriched environment called "Rat Park," with social interactions, activities, and rewards other than drugs, reduced their drug-seeking behavior compared to isolated rats.
What is the Rat Park experiment?The Rat Park experiment highlights the significance of environment and social connections in addiction, but applying this to human society is intricate.
The way to shift societal views on addiction are:
Educate and raise awareness about addiction. Combat addiction stigma by promoting empathy and awareness in society.Prevention and early intervention: Target risk factors and intervene early for at-risk individuals.The importance of connection and social support in drug rehabilitation and reduction methods is emphasized in the video. Meaningful connections foster belonging, support, and purpose for recovery.
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What two variables may affect the results of an investigation of the variety of human traits if kept constant
Two variables that may affect the results of an investigation of the variety of human traits if kept constant are genetic factors and environmental factors.
Genetic Factors: Genetic variation plays a significant role in shaping human traits. If the investigation aims to understand the variety of human traits, it is essential to keep genetic factors constant within the study population. This can be achieved by focusing on a specific group with similar genetic backgrounds, such as studying traits within a particular ethnic or geographic population.
Environmental Factors: Environmental factors, including both external and internal influences, can significantly impact human traits. These factors encompass a wide range of variables, such as diet, lifestyle, socioeconomic status, education, cultural practices, and exposure to pollutants or toxins.
To ensure the validity of the investigation, it is crucial to control or keep these environmental factors constant among the individuals being studied. This can be achieved by selecting a homogenous group of participants who share similar environmental conditions or by carefully designing the study to minimize the influence of external variables.
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Concentrated sulphuric acid (98.12 g.mol¹) has a density of 1.5 g/cm³ and is 60% H₂SO4 per mass. The rest is water. How many H* ions are there in a 45 mL concentrated sulphuric acid solution?
The number of hydrogen ions present in 45 mL of concentrated sulphuric acid solution is 4.97 × 10²³ ions.
How to calculate number of hydrogen ions?To calculate the number of hydrogen ions in the acid, we have to calculate the number of moles as follows:
Density = mass ÷ volume
According to this question, concentrated sulphuric acid with molar mass of 98.12 g.mol¹ has a density of 1.5 g/cm³ and is 60% H₂SO4 per mass.
Mass = 1.5g/cm³ × 45cm³ = 67.5grams.
Moles = mass ÷ molar mass
moles = 67.5g ÷ 98.12g/mol = 0.687 moles
If 60% of this quantity contains the acid, then 60/100 × 0.687 = 0.413 moles of acid is present.
There are 2 moles of H+ in sulphiric acid, hence, the no of ions can be calculated as follows:
no of ions = 2 × 0.413 × 6.02 × 10²³ = 4.97 × 10²³ ions.
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34. The medial border is labeled:
A. 3
B. 10
C. 8
D. 2
Please label the following bones: Talus, Calcaneus, Distal phalanges of the 4th metatarsal
2-Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and ss (spineless bristles) were testcrossed, and the following progeny were obtained:
Phenotype Number
wild-type 134 ebony 16 ebony, scarlet 136 ebony, spineless 694 ebony, scarlet, spineless 156 scarlet 736 scarlet, spineless 20 spineless 108
(a) What indicates that the genes are linked? 1 mark
(b) What was the genotype of the original heterozygous females? 1 mark
(c) What is the order of the genes? 1 mark
(d) What is the map distance between e and st? 1 mark
(e) Between e and ss? 1 mark? 1 mark
(f) What is the coefficient of coincidence? 1 mark
(g) Calculate the interference? 1 mark
(h) Diagram the crosses in this experiment. 1 mark
The progeny includes recombinant phenotypes indicating that the genes are linked. Specifically, the occurrence of the phenotypes "ebony, scarlet," "ebony, spineless," and "scarlet, spineless" indicates that the genes e, st, and ss are on the same chromosome.
These are the recombinant phenotypes: ebony, scarlet (136), ebony, spineless (694), and scarlet, spineless (20).
From the given data, we can observe that the progeny with the recombinant phenotypes account for a total of 136 + 694 + 20 = 850 individuals.
For the map distance between e and st, we need to determine the total number of progeny and the number of recombinant progeny (ebony, scarlet).
Total progeny = 134 + 16 + 136 + 694 + 156 + 736 + 20 + 108 = 2000
Number of recombinant progeny (ebony, scarlet) = 136
Map distance between e and st = (Number of recombinant progeny / Total progeny) * 100
= (136 / 2000) * 100
Map distance between e and st = 6.8 units
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in which biome are minerals in the soil most rapidly depleted
Answer:
Boreal forest is among the largest terrestrial biomes on earth in which minerals in the soil most rapidly depleted.