What determines a different stock?
a. Geographic isolation
b. Reproductive isolation
c. Different species
d. A certain number of individuals
b
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The genotype AA is referred to as
a. heterozygous. b. hybrid. c. homozygous recessive. d. homozygous dominant. e. codominant.
Which of the following is an important vasodilator in coronary arteries?
A) adenosine B) nitric oxide C) endothelin-1 D) oxygen E) bradykinin
________ communication occurs within an animal societal unit.
A. Chemical B. Visual C. Auditory D. Tactile E. All of the choices are correct.
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