Population Genetics Exam 2 Questions with Answers
Which of the following statements is most accurate concerning the founder effect?
a.
It increases genetic variation.
b.
It is not an example of genetic drift.
c.
It results when a small population breaks away from a larger one.
d.
It onl...
Which of the following statements is most accurate concerning the founder effect?
a.
It increases genetic variation.
b.
It is not an example of genetic drift.
c.
It results when a small population breaks away from a larger one.
d.
It only occurs amongst the Amish. - Answer-c
Bottleneck events are always caused by the death of most of a species' population. -
Answer-f
Conservation efforts have preserved most of the bison's original genetic diversity. -
Answer-f
Which of the following is not a potential result of a bottleneck event?
a.
an increase in potential mates
b.
a decrease in genetic diversity
c.
an increase in inbreeding
d.
an increased chance of extinction - Answer-a
Genetic drift, the founder principle, and the bottleneck effect all occur under what
conditions?
a.
in small populations when one genetic trait becomes more common in a population
purely by chance
b.
in small populations and result in a decrease in genetic diversity and/or an increase in
the occurrence of specific genetic traits
c.
when a small group of organisms only reproduce with each other to create a larger
population of organisms
d.
when the majority of a population is decimated and there are only a few remaining
organisms left to rebuild the population - Answer-not d
, A species that has experienced a severe bottleneck event would be expected to
_______.
a.
be better able to adapt to changing environmental pressures
b.
have few instances of inbreeding
c.
be more susceptible to disease and famine
d.
retain significant genetic diversity - Answer-not b
The unusual maintenance of genetic diversity among the Mouflon in the Indian Ocean
after a severe reduction in their population is mostly due to environmental pressures on
the island where they lived. - Answer-t
The founder effect is an example of _______.
a.
the enhancement of recessive traits
b.
genetic drift
c.
human reproduction
d.
the enhancement of dominant traits - Answer-b
R-organisms reproduce at a very high rate. Knowing this, why don't they usually reach
their carrying capacity?
a.
They live in environments with many predators that feed on them.
b.
They are regularly killed off by disease and/or drought.
c.
Their life span is too short.
d.
a and b only - Answer-not c
Which of the following has not resulted in the decline of cheetah populations?
a.
population bottleneck
b.
overhunting
c.
habitat destruction
d.
large genetic diversity - Answer-d
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