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The following information applies to the next two questions.
In carrots, the normal colour of the root is orange. The production of the orange pigment can be illustrated by the pathway shown below:
As indicated in the diagram, Enzyme A catalyses the conversion of the yellow compound, Precursor A, to another yellow compound, Precursor B. Enzyme B catalyses the conversion of Precursor B to the final orange compound.
Question
Two true breeding variant strains have been observed, both of which produce yellow roots. One of the variants contains a mutation in the gene encoding Enzyme A and the other variant carries a mutation in the gene encoding Enzyme B. When these true breeding strains are crossed together the resulting F1 progeny all possess orange roots.
Given this information, is the yellow phenotype of the two variants recessive or dominant to the wild-type orange phenotype?
The F1 were allowed to self cross. Draw a Punnet Square and determine what phenotypic ratio will be observed in the F2.
Because biologists disagree about the details of phylogenies, some nonscientists argue that such disagreements warrant the questioning of evolutionary theory in its entirety. Why is this reasoning flawed?
What is phosphofructokinase? We see that during glycolysis Fructose 6 phosphate is converted to Fructose 1,6 Bi phosphate? How is it a rate limiting step? What is the significance of phosphohluco isomerase? In short tell me what Na+-K+ pump is?
If we wanted to produce human insulin or human blood clotting factor in bacteria, what problems might we encounter? (genetic problems, not ethical)
A typical prokaryotic cell has about 3,000 genes in its DNA, while a human cell has about 20,500 genes. About 1,000 of these genes are present in both types of cells. Explain how such different organisms could have this same subset of genes ?
directions be sure to make an electronic copy ofyour answer before submitting it to ashworth college for grading.
If the albino phenotype occurs in 1/10,000 individuals in a population at equilibrium and albinism is caused by an autosomal recessive allele, a, calculate the frequency of mating between heterozygotes.
positive diagnosis of aids is made when a patient has antibodies against the human immunodeficiency virus hiv. why
Provide a brief historical background of the development of that treatment - Determine coping approaches for various mental health crisis situations.
Which of the following disease is an autosomal dominant cause of dwarfism?
q1. both the endocrine and nervous system are main regulating systems of the body though the nervous system has been
Which of the following best explains the phrase "descent by modification"?
Relate the steps of the life cycle of a common virus, such as HIV.Your response should be at least 500 words in length
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