Reference no: EM132598920
1) Horses and donkeys can mate successfully to produce mules, which are always sterile. Which genetic isolating mechanism prevents horses and donkeys from becoming a single species?
a) Hybrid infertility
b) Behavioral isolation
c) Mechanical isolation
d) Hybrid inviability
e) Temporal isolation
2) The bison, grizzly bears, moose, bighorn sheep, boreal toad, monkeyflower, and prickly pear cactus living in Yellowstone Park are an example of a(n):
a) Species
b) Population.
c) Community.
d) Ecosystem
3)In a population of toads, 9% exhibit short tongues (recessive form) instead of long tongues (dominant form). What percentage of the population are carriers for the short tongue trait?
a)91%
b)18%
c)9%
d)42%
4)Within a large population, if no mutations occur, no migration occurs, all mating are random and each individual has an equal chance of reproducing, which of the following will probably happen?
a)No evolution will occur.
b)Natural selection will occur at the normal rate for that species.
c)A bottleneck will occur.
d)A change in allele frequency will lead to rapid evolution.
e)Extinction will occur.
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Differences in selection concepts
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