What determines a different stock?

a. Geographic isolation
b. Reproductive isolation
c. Different species
d. A certain number of individuals


b

Biology & Microbiology

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The genotype AA is referred to as

a. heterozygous. b. hybrid. c. homozygous recessive. d. homozygous dominant. e. codominant.

Biology & Microbiology

Which of the following is an important vasodilator in coronary arteries?

A) adenosine B) nitric oxide C) endothelin-1 D) oxygen E) bradykinin

Biology & Microbiology

________ communication occurs within an animal societal unit.

A. Chemical B. Visual C. Auditory D. Tactile E. All of the choices are correct.

Biology & Microbiology

Which of the following explains what happens to the circulatory system during hyperventilation?

a) oxygen levels increase, causing an increase in blood pH b) Oxygen levels decrease, causing a decrease in blood pH c) Carbon dioxide levels decrease, causing an increase in blood pH d) Carbon dioxide levels increase, causing a decrease in blood pH

Biology & Microbiology