In mammals, males are ________ for genes on their sex chromosomes, and females can be ________ or heterozygous for genes on their sex chromosomes.
A. hemizygous; homozygous
B. homozygous; hemizygous
C. heterozygous; hemizygous
D. heterozygous; homozygous
Answer: A
You might also like to view...
What causes Addison’s disease?
a. brain trauma b. heart disease c. failing adrenal cortex d. alcoholism
Which autoimmune disease is incorrectly matched with the tissue it affects?
a. lupus ? blood b. type I diabetes ? pancreas c. multiple sclerosis ? nerves d. lupus – pancreas e. lupus – anemia
Imagine that every person on Earth had an ecological footprint the size of an average Haitian person's ecological footprint. Which of the following is a potential result?
a. we would quickly run out of renewable and nonrenewable resources because we would have to use even more fossil fuel to support our energy demands b. we would exceed the biocapacity of Earth c. it would take the equivalent of about four Earths to support all of us d. our effect on Earth's resources would be at a much more sustainable level than it is currently e. a, b, and c are all potential results
XH2 + NAD+ ? X + NADH + H+. In the preceding equation, NAD+ is said to be:
a. an enzyme. b. storing two hydrogen atoms. c. reduced. d. oxidized. e. a catalyst.