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Answer 1

Evolution and Genetics I really need the help plz

The resistance of many bacterial species to antibiotics is an example of

stabilizing selection

directional selection

disruptive selection

extreme selection

The correct equation for the Hardy-Weinberg principle is

p2 + pq + q2 = 1

p2 + 2pq + q2 = 1

p + 2pq + q = 1

p + pq + q = 1

Which of the following are types or patterns of natural selection

disruptive selection

directional selection

stabilizing selection

all of these

The accumulation of small changes in a gene pool over a relatively short period is called

anagenesis

cladogenesis

microevolution

punctuated equilibrium

Random changes in allele frequency in a population are called

gene flow

genetic drift

microevolution

the least-favored allele

According to the Hardy-Weinberg principle, the p stands for

the most common allele

the recessive allele

the dominant allele

the least-favored allele

The hypothesis that evolution occurs at an irregular rate through geologic time is known as

directional evolution

directional equilibrium

punctuated equilibrium

punctuated evolution

Mutations occur because of

errors in DNA replication

exposure to radiation

exposure to chemicals

all of these

New species form

when subspecies diverge more and more

because of natural selection

when members of the same species become adapted to new environments

all of the above

The tendency of individuals to mate with those that have the same phenotype is called

assortative mating

random mating

genetic drift

bottleneck

A drastic short-term reduction of population size caused by natural disasters, disease, or predators is called

gene flow

founder effect

microevolution

bottleneck effect

The Hardy-Weinberg principle states that allele frequencies in a gene pool remain in equilibrium as long as natural selection is occurring

True

False

Which of the following describes a population

dogs and cats living in Austin, Texas

four species of fish living in a pond

dogwood trees in Middletown, Connecticut

roses and tulips in a garden

The traditional, Darwinian view of evolution was that of

slow, gradual change over long periods of time

moderate changes over long periods of time

fast, rapid changes in a short amount of time

species do not change

Speciation that results from the formation of a geographic feature that isolates some members of a population from other members is an example of

allopatric speciation

directed speciation

stabilizing speciation

sympatric speciation

The finches that Darwin studied differed in the shape of their beaks. According to Darwin, the finches probably

all had a common ancestor

were born with identical beaks

were descended from similar birds in Africa

ate the same diet

Answer 2

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