What is true about dissimilar organisms such as a cow and yeast?
a. they are not related at all
b. their degree of relatedness cannot be evaluated
c. their degree of relatedness can be determined from their genes
d. they can interbreed and thus are the same species
Ans: c. their degree of relatedness can be determined from their genes
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The concept of a molecular clock allows a population geneticist to estimate what?
A. how quickly mutations are occurring in all species B. how long two populations of the same species have been separated C. how frequently beneficial mutations will appear in a population D. how large a population is
Photoreceptors that detect dim light are called ________ cells
a. cone b. amacrine c. rod d. horizontal
During intense exercise, the metabolic activity of muscle causes ________ in the partial pressure of oxygen in the tissue, ________ the movement of oxygen into the tissue.
A) a decrease : facilitating B) a decrease : reducing C) no change : facilitating D) an increase : reducing E) an increase : facilitating
The method of reasoning that uses construction of general principles by careful examination of many specific cases is called
A. inductive reasoning. B. experimental reasoning. C. hypothetical reasoning. D. theoretical reasoning. E. deductive reasoning.