Males are more often affected by sex-linked traits than females because
A) males are hemizygous for the X chromosome.
B) male hormones such as testosterone often exacerbate the effects of mutations on the X chromosome.
C) female hormones such as estrogen often compensate for the effects of mutations on the X.
D) X chromosomes in males generally have more mutations than X chromosomes in females.
E) mutations on the Y chromosome often exacerbate the effects of X-linked mutations.
Ans: A) males are hemizygous for the X chromosome.
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Which of the following is NOT an example of
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Inbred strains with individuals of a relatively homogeneous or constant genetic background are often used to determine the influence of genes or the environment on phenotypic variation
Variation observed between different inbred strains reared in a constant or homogeneous environment would likely be caused by genetic factors. What would be the source of variation observed among members of the same inbred strain reared under varying environmental conditions?
If Hani has type A blood and his mother has type B blood, which of the following is the most likely genotype of Hani's father?
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