The reason for differences in the sets of proteins expressed in a nerve and a pancreatic cell of the same individual is that nerve and pancreatic cells contain different _____
A) genes
B) regulatory sequences
C) sets of regulatory proteins
D) promoters
C
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The rate of background extinctions is calculated to be species per year per million species.
A. 0.1 to 1.0 B. 1.0 to 10 C. 0.001 to 0.01 D. 10 to 100 E. None of the answer choices is correct.
This animal has a small coelom, soft body, a
hinged two-part shell, and no distinct head. This animal is ___.
a. a clam b. a slug c. an octopus d. a planarian e. more than one of these
In highly integrated insect societies,
a. natural selection favors individual behaviors that lead to greater diversity among members of the society. b. there is scarcely any division of labor. c. cooperative behavior predominates. d. patterns of behavior are flexible, and learned behavior predominates. e. all of these are true
Even though a population in true Hardy-Weinberg equilibrium cannot exist, how can using the equation be useful?
What will be an ideal response?