New gene variations are constantly being introduced into populations through random mutations.
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Q29: If two species of plants bloom during
Q30: Bats,pterosaurs,and birds are examples of _ evolution.
Q31: Choose the phrase that best represents macroevolutionary
Q32: During fossilization,remains of an organism may become
Q33: _ isolating mechanisms lead to reproductive isolation
Q35: Much of the evolutionary history of vertebrates
Q36: Two closely related species that fail to
Q37: A structure remaining in an animal but
Q38: Whales are descendents of:
A)sharks
B)a relative of the
Q39: The bones of vertebrate forelimbs are similar
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