Population Genetics Test Questions with Answers
Explain how the Amish are an example of the founder effect. - Answer-The Amish population was established by a small number of individuals whose genetic diversity did not exactly match that of the distribution of genes in the general population. As ...
Population Genetics Test Questions
with Answers
Explain how the Amish are an example of the founder effect. - Answer-The Amish
population was established by a small number of individuals whose genetic diversity did
not exactly match that of the distribution of genes in the general population. As a result,
certain rare traits became more commonly expressed in the Amish population as it grew
due to their over representation in the founding gene pool of the population.
Explain how a bottleneck event can enrich recessive traits in the genetics of a
population. - Answer-A bottleneck event severely reduces the fraction of a species able
to pass on their genes to offspring. Any once rare recessive traits present in the
surviving breeding population are passed to a larger fraction of the total population of
offspring, thereby enriching those recessive traits in the total gene pool.
Polydactylism occurs _______. - Answer-d.
more commonly in certain populations, such as the Amish.
Explain why the crossbreeding of bison and cattle is both a benefit and hindrance to
conservation efforts aimed at protecting bison genetic diversity. - Answer-While the
bison gene pool is currently much healthier than that of the cheetah, only one herd
among the 4% of all protected bison herds has no known cattle ancestry. Cattle
ancestry has helped boost the total population of bison and has increased such herds'
genetic diversity, but those herds do not help protect the bison's original gene pool.
Bottleneck events lead to _______. - Answer-b.
an increase in inbreeding
After hunting by European settlers, the bison population of 60 million was reduced to
_______ of its original size. - Answer-d.
1 : 60,000
The Toba supervolcanic event caused a bottleneck in the human population by
_______. - Answer-c.
inducing an ice age
Bottleneck events are always caused by the death of most of a species' population. -
Answer-false
The disproportionately high appearance of polydactylism among the Amish suggests
that _______. - Answer-c.
it was overrepresented in the gene pool of the original Amish settlers
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