The nearly neutral theory:
a. relaxes assumptions concerning the selective neutrality of alleles.
b. can be used to explain the discrepancy between substitution rates explained by generation time and annual time.
c. suggests that mildly deleterious mutations can fix more readily in smaller populations due to drift.
d. A and C.
e. All of the above.
E
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Which of the following models for RNA polymerase II transcription termination is analogous to ?-dependent termination in bacteria?
A. the antiterminator model B. the submarine model C. the torpedo model D. the allosteric model E. the hairpin model
Darwin was probably influenced most by which of the following when developing his theory of
evolution?
a. Scala Naturea b. Catastrophism c. Uniformitarianism d. Taxonomy e. Vestigial structures
Menstruation begins in response to
a. rising levels of FSH and LH. b. rising levels of GnRH. c. rising levels of progesterone. d. falling levels of progesterone. e. rising levels of estrogen.
What developmental landmark occurs at day 15 in humans?
a. primitive streak b. neural tube c. yolk sac d. pharyngeal arches
e. somites