In humans, skin color is controlled by several genes. Thus, skin color is a(n) ____ characteristic.?

What is the function of the inner third of a butterfly’s wings?

a. flight b. camouflage c. thermoregulation d. mate selection

Which of the following is true concerning the

hybrids produced by parapatric speciation? a. They are more fit than individuals on either side of the contact zone. b. They appear commonly on either side of the contact zone. c. They are more likely to breed on either side of the contact zone. d. They are selected against in the contact zone. e. They are less fit than individuals on either side of the contact zone.None of these is true.

If glucose is the sole energy source, what fraction of the carbon dioxide exhaled by animals is generated by the reactions of the citric acid cycle?

A) 1/6 B) 1/3 C) 2/3 D) all of it

Two major types of symmetry found in viruses include

A. icosahedral and helical. B. icosahedral and radial. C. helical and radial. D. radial and bilateral.