Population Genetics Answers

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

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

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

The bottleneck event that decimated the bison was caused by _______.a.overhuntingb.climate changec.diseased.habitat destruction

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

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

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

Which respresents the common conditions of all three of the following: genetic drift, the founder principle, and the bottleneck effect? a. occurs in small populations when one genetic trait becomes more common in a population purely by chance b. occurs in small populations and results 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 killed off and there are only a few remaining organisms left to rebuild the population Please select the best answer from the choices provided