Multiple Choice
Speciation has occurred when
A) two populations of organisms have been separated for a very long time.
B) a change in allele frequency has occurred.
C) organisms of one population do not recognize the mating call of another population and so mating does not occur.
D) offspring of mating from members of two different populations are able to mate with members of either population.
Correct Answer:

Verified
Correct Answer:
Verified
Q7: A group of ants escaped from a
Q13: Which of the following types of reproductive
Q15: Which of the following would tend to
Q20: Frequently, a group of related species will
Q23: Two species interbreed occasionally and produce vigorous,
Q29: Which of the following statements regarding the
Q35: In which of the following situations would
Q39: The geographic isolation of a population from
Q45: When plants undergo allopatric speciation, an initial
Q55: Most polyploid species arise from<br>A) a single