The idea that evolution occurs in spurts of rapid change followed by long periods of little change is
A. gradualism.
B. convergent evolution.
C. differential reproduction.
D. punctuated equilibrium.
D. punctuated equilibrium.
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Crick's proposed "adaptor molecule" is now known to be:
A. mRNA. B. rRNA. C. tRNA. D. imRNA.
Compare the worldwide distribution of seabirds to that of marine reptiles. Which is more widely distributed at all latitudes? Why do you think this is so?
What will be an ideal response?
If two populations of a species show significant structural differences, it is likely that
A. there is little sexual reproduction between populations. B. they are reproductively isolated. C. each is specifically adapted to a certain environmental situation. D. All of the choices are correct.
Glycocalyx does not help avoid phagocytosis.
Indicate whether the statement is true or false.