Adaptive radiation is NOT accompanied by:
a. migration to an island.
b. a mass extinction.
c. a devastating event, such as a volcanic eruption.
d. climatic change.
e. sympatric speciation
E
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Which of the following pairs indicates the closest
macroevolutionary link among the animals according to the evolutionary history tree in the text? a. flatworms; roundworms b. sponges; cnidarians c. arthropods; annelids d. arthropods; roundworms e. echinoderms; mollusks
Which of the following are most permeable to water
and small molecules? a. glomerular capillaries b. peritubular capillaries c. afferent arterioles d. ureters e. efferent arterioles
A class of mutations that results in multiple contiguous amino acid changes in proteins is likely to be which of the following?
A) frameshift B) transition C) base analog D) recombinant E) transversion
Mice lacking plakoglobin have skin defects but usually die from
A) cancer. B) muscular dystrophy. C) heart failure. D) Ehlers–Danlos syndrome. E) scurvy.