Evolution Unit Test

Front

What does sexual selection mean?

Back

Mating is not random; Organisms mate based on attractiveness; Organisms have the ability to compete for a mate; All of these are true.

Front

Why are advantageous traits more likely to be passed onto offspring?

Back

Because they are more likely to survive and reproduce.

Front

What are the differences among a species, like different bird beaks, called?

Back

Variations.

Front

What word describes a trait that helps an organism survive in its environment?

Back

Adaptation.

Front

What is natural selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is a mutation?

Back

A change in the DNA sequence that can lead to new traits.

Front

What is the role of competition in evolution?

Back

It drives natural selection by determining which individuals survive and reproduce.

Front

What is an example of a physical adaptation?

Back

The thick fur of polar bears that helps them survive in cold environments.

Front

What is the significance of genetic variation in a population?

Back

It increases the chances of survival and adaptation to changing environments.

Front

What is the difference between a dominant and recessive allele?

Back

A dominant allele expresses its trait even if only one copy is present, while a recessive allele only expresses its trait if two copies are present.