Food supply is a density-dependent

limiting factor

True

or

False

True

Directional selection results in the range

of phenotypes shifting toward one extreme

True 

or

False

True

An example of a density-dependent

limiting factor is a hurricane

True

or

False

False

Natural selection acts on 

phenotypes, not genotypes

True

or

False

True

The study of demographics helps predict

changes in the size of population

True

or

False

True

Natural selection always eliminates any genetic 

disorders from a population, regardless of the frequency

of the gene that is responsible for a disorder

True

or

False

False

Very small populations are less likely

to become extinct than larger populations

True

or

False

False

Which of the following is a density-dependent

limiting factor?

Food

or

Fire

Fire

Which of the following does NOT represent a population?

All the robins in Austin, TX

or

All the birds in Chicago, ILL

All the birds in Chicago, Illinois

Demographic studies of populations must

take into consideration

population density

or

population dispersion

or

All of the above

All of the above

In 1908, Hardy and Weinberg independently

demonstrated that...

recessive alleles replace dominant alleles in a population over long periods of time

or

dominant alleles do not replace recessive alleles in a population

dominant alleles do not replace recessive alleles

in a population

Which of the following is a density dependent factor?

Disease

or

Fire

Disease

Because individuals in a population usually tend

to produce more than one offspring

populations tend to increase in size

or

individuals tend to die quickly

populations tend to increase in size

The range of phenotypes shifts toward one extreme in

disruptive selection

or

directional selection

directional selection

Regarding population dispersion patterns, which of the 

following is an inappropriate pairing?

clumped - clusters

or

dispersive - randomly distributed

dispersive - randomly distributed

As a population reaches its carry capacity,

there is an increase in competition for

food

or

shelter

or 

All of the above

All of the above

The movement of alleles into or out of a

population due to migration is called

mutation

or

gene flow

gene flow

Actual proportions of homozygotes and heterozygotes

can differ from Hardy-Weinberg predictions because of...

the occurrence of mutations

or

genetic drift within the population

or

all of the above 

All of the above