Determining Population Size Answers

Bottleneck events are always caused by the death of most of a species’ population.

A species that has experienced a severe bottleneck event would be expected to _______.a.be better able to adapt to changing environmental pressuresb.have few instances of inbreedingc.be more susceptible to disease and famined.retain significant genetic diversity

The Toba supervolcanic event caused a bottleneck in the human population by _______.a.raising global temperaturesb.humans choking on volcanic ashc.inducing an ice aged.volcanic lava burning human villages

The disproportionately high appearance of polydactylism among the Amish suggests that _______.a.it is a common mutationb.it is a common birth defect in Pennsylvaniac.it was overrepresented in the gene pool of the original Amish settlersd.humans are prone to this birth defect

The founder effect is an example of _______.a.the enhancement of recessive traitsb.genetic driftc.human reproductiond.the enhancement of dominant traits

In nature, this method is the only way diversity is truly created. Changes in the genetic material of an organism are passed on to offspring and, although the process is slow, it could eventually result in the creation of a new species. These statements describe the effects of _______ on biodiversity.a.growth rateb.genetic driftc.mutationd.carrying capacity

The bottleneck event that the cheetah went through in the last ice age ultimately resulted in a stronger, more robust species.

The study of island biogeography is best said to be based on _______.a.founder populationsb.genetic driftc.genetic diversityd.offspring exhibiting parental genes

The Amish are an example of a population where the founder effect has resulted in generally rare genetic traits being more commonly expressed.

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.