2.6 Adaptations and Natural Selection VIDEO questions

What is genetic diversity?

• The process of natural selection

• The variability in the genomes of populations

• The ability of organisms to adapt to their environment

• The relationship between adaptations and fitness

Which of the following is NOT a cause of genetic variability in organisms?

• Random mutations during DNA replication

• Crossing over during meiosis

• Selective pressure from the environment

• Both A and B

What is an adaptation?

• A trait that increases an organism's fitness

• A random mutation in an organism's DNA

• A trait that decreases an organism's ability to survive

• A genetic difference that has no effect on an organism

How does natural selection play a role in selecting adaptations?

• Organisms with adaptations survive and reproduce more offspring

• Organisms without adaptations die off

• Both A and B

• Neither A nor B

What is a selective force or selective pressure?

• The genetic diversity in a population

• The environmental condition that selects for or against certain traits

• The process of genetic mutations

• The relationship between adaptations and fitness

Which of the following is an example of an adaptation in response to environmental change?

• A population of mice developing larger ears

• A population of birds developing longer wings

• A population of fish changing color

• A population of insects growing larger legs

What role does the environment play in determining whether a trait is an adaptation?

• The environment determines if a trait is beneficial or harmful to the organism

• The environment has no effect on whether a trait is an adaptation

• All traits are adaptations regardless of the environment

• Adaptations are determined solely by genetic mutations

What factors affect the pace of evolution or the ability of a population to adapt?

• The size of the population

• The availability of resources

• The rate of environmental change

• All of the above

Which organisms are more likely to evolve rapidly?

• Bacteria and viruses

• Plants and animals

• Humans and mammals

• Insects and reptiles

What is the difference in beak size between the two islands in the Galapagos?

• The beak size is the same on both islands

• The beak size is larger on one island

• The beak size is smaller on one island

• The beak size varies on both islands