Bottleneck

As a population recovers from reduction due to the bottleneck effect, the population will experience -

• a loss of genetic dicversity.

• migration.

• no change to allele frequency.

• genetic regulation.

Tags

NGSS.HS-LS4-2

Which of the following could not be a possible cause of the bottleneck effect?

• Overhunting of northern elephant seals

• A forest fire that destroys most of a population of deer

• A crop that is destroyed by blight

• A small group of fish that are added to a pond

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-5

In which of the following populations would genetic drift be most likely to cause a rapid evolution of the population?

• The human population of India

• A large population of Mexican free-tailed bats living in central Texas

• A geographically isolated population of 5000 green tree frogs

• A small group of 12 cheetahs living in Namibia

What does the picture represent?

• Founder Effect

• Mutations

• Bottleneck effect

• Gene Flow

Tags

NGSS.HS-LS4-5

A bottleneck event occurs when...

• the population size remains the same

• the population size is not affected

• the population size increases

• the population size decreases

What is the bottleneck effect in population genetics?

• A sudden reduction in population size due to environmental events

• An increase in genetic diversity

• A stable population size over time

• A gradual increase in population size

Tags

NGSS.HS-LS4-5

Which of the following scenarios is an example of a bottleneck event?

• A volcanic eruption that wipes out most of a species

• A species gradually adapting to a new environment

• A population expanding into a new territory

• A species maintaining a stable population size

Tags

NGSS.HS-LS4-5

How does the bottleneck effect impact genetic diversity?

• It increases genetic diversity

• It decreases genetic diversity

• It has no effect on genetic diversity

• It stabilizes genetic diversity

In a population that has experienced a bottleneck, what is a likely consequence?

• Increased genetic variation

• Decreased genetic variation

• Stable genetic variation

• Unchanged genetic variation

Which of the following is NOT a potential cause of a population bottleneck?

• Natural disasters

• Human activities

• Gradual climate change

• Introduction of new predators

Tags

NGSS.HS-LS4-5