Reproductive isolating mechanisms:
A) are initiated by geographic isolation
B) occur within a deme
C) occur before geographic isolation
D) a and b
Correct Answer:
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Q71: A species that can survive in a
Q72: Generalization:
A)allows for a greater tolerance of environmental
Q73: Species that occupy mutually exclusive geographical areas
Q74: A deme is:
A)a group of animals who
Q75: The mule represents an example of:
A)hybrid sterility
B)hybrid
Q77: Spatial isolation:
A)cuts off gene flow between groups
B)allows
Q78: Different species living in the same area
Q79: A distribution of frequencies that shows a
Q80: In biological terms,a race is a:
A)species
B)subspecies
C)deme
D)cline
Q81: A gene that regulates or blocks the
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