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In studying tumor cells, you isolate gene X that causes protein Q to become tyrosine phosphorylated (the addition of a phosphate group to a tyrosine). You isolate a homozygous null mutation in gene X and now find that protein Q is not tyrosine phosphorylated. Furthermore, the tumor cells are now behaving more like normal cells. That is, when protein Q is phosphorylated, it induces the cells to become more cancer-like. If you concluded that Gene X is necessary, describe an experiment to test whether Gene X is sufficient. If you concluded that Gene X is sufficient, describe an experiment to test whether Gene X is necessary.
If there are five alleles at a locus, how many genotypes may there be at this locus? How many different kinds of homozygotes will there be? Again with 8 alleles at a locus.
(A) Compare and contrast the shape of most animal cells with respect to most plant cells in terms of osmotic potential? (B) What is it that osmosis requires that sets it apart from simple diffusion?
q1. because a doughnut contains large quantity of energy that can become available for our metabolism when eaten why
Aniridia is a type of blindness that is due to a dominant gene. Migraines are the result of a different dominant gene. Suppose that a woman who is not blind, but whose parents both suffer from aniridia, goes to a genetic expert for advise.
A) If the f(D) of an X-linked gene in a population = 0.8, what is the f(d) of the other allele at this locus?
The Entner-Doudoroff pathway, which is used by some microorganisms, including the talented Sinorhizobium meliloti:
The Neurospora cross was made between a strains that carried mating type A and mutant allele arg-1(arg) and another strain the carried mating-type a and the wild type arg-1 (+) gene. Four hundred linear octads were isolated and they fell into the 7 c..
It is a peculiarity of the cardiac circulation that there are channels that pass from coronary arterioles, from the capillary bed, and from the cardiac veins directly into the lumen of the heart.
What are two physical properties that can be used to separate or to characterize proteins.
Explain which strategy you think would lead to more rapid genetically-based gains in the rate at which chickens grow? (assume the starting populations for both strategies have the same genetic composition).
What type of cross would produce the following genetic ratios? Write the genotypes that would lead to these ratios.
Write a prargraph to explain why the response of the third line of defence, both cellular and antibody immunity, is specific in nature
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