Changes Over Time

Front

What is the term for genetic changes in a population over a long period of time?

Back

Evolution

Front

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

Back

Because they are more likely to survive and reproduce.

Front

What can lead to new variations in a population?

Back

Mutations, gene flow, and choosing a 'fit' mate.

Front

What do two closely related organisms have in common regarding their DNA?

Back

They have very similar DNA sequences.

Front

What is an inherited trait that helps a living thing survive in a specific environment called?

Back

Adaptation

Front

What is the process by which organisms better adapted to their environment tend to survive and produce more offspring?

Back

Natural Selection

Front

What is the term for the movement of genes between populations?

Back

Gene Flow

Front

What is a mutation?

Back

A change in the DNA sequence of an organism.

Front

What is the significance of homologous structures in evolution?

Back

They indicate common ancestry among different species.

Front

What is the difference between a dominant allele and a recessive allele?

Back

A dominant allele masks the effect of a recessive allele in a heterozygous individual.