A protein that has been negatively selected against will accumulate how many mutations relative to one that has been selected for?
A. more mutations
B. fewer mutations
C. about the same number of mutations
D. It is impossible to tell based on the
information given.
A
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Which of the following statements about the transfer of fluid from the glomerulus to Bowman's capsule is CORRECT?
A. It results from active transport. B. It transfers large molecules (e.g., proteins) as easily as small ones. C. It is very selective as to which small molecules are transferred. D. It is mainly a consequence of blood pressure force-filtering the fluid. E. It usually includes the transfer of red blood cells to the nephron tubule.
In gamete intrafallopian transfer (GIFT), fertilization occurs in
A) the uterus. B) a culture dish. C) a uterine tube. D) a testis.
Referring to the above diagram of the brain, B
identifies which region?
a. hypothalamus b. thalamus c. cerebrum d. corpus callosum e. cerebellum
The buildup of soil on bare rock by the decomposition of early colonizers is characteristic of ________ succession
A) primary B) ecological C) opportunistic D) secondary