LS 11 Changing Populations Review

Which scientist visited the Galapagos Islands and used his research to suggest the theory of natural selection?

• James Watson

• Gregor Mendel

• Charles Darwin

• Robert Hooke

A characteristic that helps an organism survive and reproduce in its environment is called —

• an adaptation

• a genetic mutation

• a response to stimulus

• a homologous structure

When a DNA sequence is copied, sometimes mistakes occur in the new strand of DNA. What do we call these mistakes?

• Transcription

• Mutations

• Adaptations

• Chargaff's rule

Which process is LEAST likely to lead to the evolution of a species?

• Metabolism

• Natural selection

• Adaptation

• Mutation

What is it called when all of the organisms of a species completely die out?

• Fossilization

• Adaptation

• Mutations

• Extinction

What is the gradual change in species or population overtime known as?

• Classification

• Genetics

• Evolution

• Population disturbances

Animals living in extremely cold environments usually have special characteristics like thick blubber, thick fur, or other methods of conserving heat.  What do these characteristics represent?

• Adaptations

• Selective breeding

• Variations

• Cellular mistakes

The figure attached shows how the Eohippus horse has changed over time to become the Equus (modern day) horse. What is this chart an example of?

• Extinction

• Evolution

• Trait addition

• Inheritable discussion

Scientists believe that the bone structure of a cat’s leg, a human’s arm, a whale’s flipper, and a bat’s wing are biologically similar. What do these similarities suggest?

• These animals had a common ancestor

• These animals can only survive if they live together

• These animals were all born at the same time

• These animals have the same bone that is used to fly

To blend in with surroundings, an animal would most likely be what color in the arctic tundra?

• Brown

• White

• Green

• Black