Multiple Choice
Allopatric speciation is most commonly caused by
A) geographical distance.
B) the unattractiveness of the females.
C) a heavy parasite load.
D) rapid genetic exchange over long distances.
E) increased genetic drift.
Correct Answer:

Verified
Correct Answer:
Verified
Q3: The famous "bell-shaped curve" that usually results
Q14: If the frequency of expression of a
Q24: The persistence of the sickle-cell anemia allele
Q53: When DDT was first introduced, insects were
Q58: Gene flow<br>A) has a homogenizing influence on
Q89: In a certain bird species, clutch size
Q90: The introduction of a small population onto
Q92: Sympatric speciation occurs<br>A)before allopatric speciation.<br>B)together with allopatric
Q95: What aspect of a population is critical
Q98: For most species that exhibit sexual dimorphism