Which phrase describes the consequence that results from nondisjunction? Choose the correct answer.

A gamete will receive too many or too few copies of a chromosome.

There will be too many gametes produced.

Which statement applies to real populations? Choose the correct answer.

Hardy-Weinberg equilibrium is rare.

Mutations are rarely passed to offspring.

Evolution cannot occur in large populations.

Gene flow represses alleles for desirable traits.

What does being in Hardy-Weinberg equilibrium mean for a population? Choose the correct answer.

The population is not evolving.

Equilibrium would gradually end.

Gene flow would occur, but slowly.

The population is evolving very rapidly.

How can geography lead to reproductive isolation? Choose the correct answer.

A physical barrier may arise and separate a population, preventing interbreeding.

Some populations may have a milder habitat than other populations.

Subspecies may choose to occupy different areas for competitive reasons.

Extremes of temperatures may reduce the breeding opportunities for some.

The Galápagos Islands in the Pacific Ocean have varied habitats. Adaptive radiation occurred on these islands in finch populations. What does this mean for the finch populations that live there? Choose the correct answer.

They changed rapidly from an ancestral species into many new forms.

They have lived unchanged through long periods of stability.

They have become more like each other in response to their habitats.

They changed in response to changes in other species they interact with.

What are three areas in which behavioral costs can be measured? Choose the correct answer.

energy, instinct, and opportunity

instinct, opportunity, and survivorship

Living in a social group evolves in species in which the costs of living in a group __________. Choose the correct answer.

are outnumbered by the benefits

do not affect the risk of predation

Which phrase describes an evolutionary benefit of behavior? Choose the correct answer.

increased survivorship and reproductive rates

more opportunities to defend territories

better shelter and foraging opportunities

greater opportunities to compete with rivals

Which outcome is an example of the cost of a behavior? Choose the correct answer.

sustaining injury while seeking food

optimizing calories during foraging

increasing territory size by defending it

finding a mate while defending territory

The illustration shows fish living in two different conditions. What benefit and cost are the fish living in the conditions shown in panel B more likely to experience than the fish living in the conditions shown in panel A? Choose the correct answer.

improved foraging success, greater threat of parasites

lower risk of disease, less assistance from other fish

reduced visibility to predators, greater access to food

less competition for food, inability to detect predators

Which is not a factor that could increase the rate of mutations in a cell? Choose the correct answer.

environmental pressure to adapt for survival

Infection with a virus, such as HPV

exposure of the cell to UV radiation

A biologist studying wolves has collected data on the mass of meat caught per day from hunts by packs varying in size from 2 to 15 wolves. The data show that as pack size increases, the mass of meat available per pack member per day increases. Which additional study would provide evidence that pack hunting provides an advantage? Choose the correct answer.

Compare the average number of pups per litter that reach reproductive age for wolf packs of different sizes.

Measure and compare the ability of wolves of varying ages to successfully engage in hunting.

Observe whether an individual wolf hunts different types of prey than a pack of wolves hunts.

Which statement supports the claim that mutations in gametes increase genetic diversity? Choose the correct answer. Responses

A deletion during meiosis results in a new version of an allele.

UV rays create thymine dimers that negatively affect a skin cell’s function.

A brain cell has a missense mutation that allows it to function more effectively.

Certain lizards dig burrows to avoid the heat of the day and emerge at night to hunt. When there are large numbers of these lizards, their burrows may intersect with each other. Raccoons are beginning to prey mainly on these lizards. The raccoons catch the lizards as they emerge from their burrows. Which change could occur if this continues? Choose the correct answer.

Lizards that use interconnected burrows to avoid raccoons will be more likely to survive and pass on their genes to offspring, thus increasing traits in the population that promote group living.

The lizards will adapt by shifting their own hunting behavior to the daytime when their main predator, the raccoon, is not active.

The lizards will begin feeding on plant roots that they can access from extensive and interconnected underground burrows so that they do not have to emerge above ground.

A guard bee’s job is to protect the hive from intruders, a job that can lead the guard bee to sacrifice its own life. If the guard bee cannot reproduce, how do genes for altruism increase in the population? Choose the correct answer.

Other members of the colony with the same genes will be able to survive as a result of the guard bee’s efforts and reproduce, thus passing on the genes.

Altruism genes are dominant, so they can be inherited more easily.

Bee colonies are so large that the loss of a few individuals will not affect the gene pool.

An insect that lives on an island can have either a light-blue or a dark-blue color. A researcher has found that the percent of the population that is light blue has increased from 35% to 72% in the last decade. Which of these statements, if true, would least help to explain this change? Choose the correct answer.

Darker-colored females are able to lay more eggs than lighter-colored females.

Female insects have shown increasing preference for light-blue males when mating.

The temperature has gotten warmer, and dark-blue insects become overheated more easily.

A species of newt makes a toxic compound in its skin. The newt uses this toxin to protect itself against predators. Snakes living in the same areas as the newts have a trait that causes them to be resistant to the toxin. Snakes that live in a different area from the newt do not have this trait. Which statement best explains the cause of this resistance? Choose the correct answer. Responses

Some snakes living in the area of the newt happened to have resistance to the toxin, which allowed these few to survive and pass on the resistance trait to their offspring.

After biting the newts, the snakes developed resistance and then passed this trait on to their offspring.

All snakes had resistance to the toxin long ago, but those snakes living outside the range of the newt did not need the trait and eventually lost it.

In Trinidad, members of a population of wild guppies, Poecilia reticulata , feature a wide variety of coloring. Male guppies can exhibit anywhere from flashy blue and orange spots all over their bodies to drab coloring with only a few small colored spots on their tails. Researchers have discovered that this coloring is a result of selective pressures in the environment. Female guppies prefer to mate with male guppies that are more brightly colored. However, male guppies with bright colors are more visible to predators. In shallow pools with fewer predators, it can be observed that the overall coloring of the guppies is brighter. In streams with more predators, the overall coloring of the guppies is drab. Which statements about the guppy population in Trinidad are true? Choose all the correct answers. Responses

The presence or absence of predators impacts the gene pool of the population of guppies.

Genes for bright coloring can enhance reproductive success depending on the environment of the guppy.

Sexual selection favors drab males.

Predation can cause an increase in the alleles for bright colors in the gene pool over time.

REVIEW Unit 6: Genetic Variation and Evolution

Authored by Lauren Cochrane

Biology

9th - 12th Grade

NGSS covered

Used 14+ times

REVIEW Unit 6: Genetic Variation and Evolution

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39 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Generally, mutations that affect a single gene occur during which step? Choose the correct answer.

operation

translation

replication

transcription

Tags

NGSS.HS-LS3-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of mutation has no effect on phenotype? Choose the correct answer.

point

silent

frameshift

chromosomal

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name for a mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a nonhomologous chromosome? Choose the correct answer.

deletion

inversion

duplication

translocation

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nondisjunction causes which of the following? Choose the correct answer.

extra gene

extra codon

extra chromosome

extra nitrogen base

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Genetic variation can arise from a random change in the DNA of a gene. What is the name for this type of change? Choose the correct answer.

allele

mutation

gene flow

gene pool

Tags

NGSS.HS-LS3-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cystic fibrosis is an example of a genetic disease caused by the deletion of a nucleotide. What is the term for this type of mutation? Choose the correct answer.
Responses

frameshift

single-gene

translocation

chromosomal

Tags

NGSS.HS-LS3-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mutations that can affect the offspring of an organism occur in what cell type? Choose the correct answer.

body

germ

brain

blood

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

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REVIEW Unit 6: Genetic Variation and Evolution

Generally, mutations that affect a single gene occur during which step? Choose the correct answer.

Which type of mutation has no effect on phenotype? Choose the correct answer.

What is the name for a mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a nonhomologous chromosome? Choose the correct answer.

Nondisjunction causes which of the following? Choose the correct answer.

Genetic variation can arise from a random change in the DNA of a gene. What is the name for this type of change? Choose the correct answer.

Cystic fibrosis is an example of a genetic disease caused by the deletion of a nucleotide. What is the term for this type of mutation? Choose the correct answer.
Responses

Mutations that can affect the offspring of an organism occur in what cell type? Choose the correct answer.

Which of these is an example of a mutagen? Choose the correct answer.

Which phrase describes the consequence that results from nondisjunction? Choose the correct answer.

Which of these describes the number of chromosomes found in people who have Down syndrome? Choose the correct answer.

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Biology

REVIEW Unit 6: Genetic Variation and Evolution

Generally, mutations that affect a single gene occur during which step? Choose the correct answer.

Which type of mutation has no effect on phenotype? Choose the correct answer.

What is the name for a mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a nonhomologous chromosome? Choose the correct answer.

Nondisjunction causes which of the following? Choose the correct answer.

Genetic variation can arise from a random change in the DNA of a gene. What is the name for this type of change? Choose the correct answer.

Cystic fibrosis is an example of a genetic disease caused by the deletion of a nucleotide. What is the term for this type of mutation? Choose the correct answer.Responses

Mutations that can affect the offspring of an organism occur in what cell type? Choose the correct answer.

Which of these is an example of a mutagen? Choose the correct answer.

Which phrase describes the consequence that results from nondisjunction? Choose the correct answer.

Which of these describes the number of chromosomes found in people who have Down syndrome? Choose the correct answer.

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Biology

Cystic fibrosis is an example of a genetic disease caused by the deletion of a nucleotide. What is the term for this type of mutation? Choose the correct answer.
Responses