Evidence of Evolution

Front

What does Darwin's theory of evolution suggest?

Back

Species change over time.

Front

What do two organisms that are closely related have in common?

Back

They have very similar DNA sequences.

Front

What can be determined by observing the embryos of two organisms?

Back

The organisms share a common ancestry.

Front

Which moth would likely increase in population in a dark environment?

Back

Dark moth.

Front

What inference might paleontologists make if modern organisms have many homologous structures?

Back

The organisms have a common ancestor.

Front

What is natural selection?

Back

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

Front

What are homologous structures?

Back

Anatomical features in different species that share a common ancestry.

Front

What is the significance of fossil records in evolution?

Back

Fossil records provide evidence of the changes in species over time.

Front

What does the term 'common ancestor' mean?

Back

A species from which two or more different species have evolved.

Front

What is the role of mutations in evolution?

Back

Mutations introduce genetic variation, which can lead to new traits in a population.