A shift from expected allele frequencies, resulting from chance, is known as

(a) natural selection.
(b) genetic drift.
(c) mutation.
(d) gene flow.


(b) genetic drift.

Biology & Microbiology

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Natural selection _____

A) is a random process B) creates beneficial mutations C) eliminates harmful mutations D) can favor beneficial mutations

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Four of the following statements about cone snail venom are true. Which one is false?

a. It is a potential source of new drugs of medical interest. b. It may be lethal to humans. c. It immobilizes the cone snail’s prey. d. It is lethal to cone snail prey. e. Synthetic versions are used as a pain reliever in humans.

Biology & Microbiology

Which blood type lacks the sugar found on the surface of red blood cells in other blood types?

A) type A B) type B C) type AB D) type O

Biology & Microbiology

The theory of chromosomal inheritance was first proposed by

A. Knight. B. Stern. C. Mendel. D. Sutton. E. Morgan.

Biology & Microbiology