Evidence for Evolution

Front

What is the primary molecule used to determine the genetic relationship between species?

Back

DNA

Front

In a sequence of rock layers, which fossil is typically the oldest?

Back

The fossil found in the lowest layer.

Front

What is a cladogram used for in evolutionary biology?

Back

To show the evolutionary relationships among different species.

Front

Which type of structures have the same parts but different functions, indicating a common ancestry?

Back

Homologous structures.

Front

What are vestigial structures?

Back

Structures that have lost most or all of their original function through evolution.

Front

What does adaptive radiation refer to?

Back

The process by which organisms diversify rapidly into a variety of forms to adapt to different environments.

Front

What is the significance of fossils in understanding evolution?

Back

Fossils provide evidence of past life forms and their changes over time.

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures share a common ancestry, while analogous structures have similar functions but different evolutionary origins.

Front

What does the term 'common ancestor' mean?

Back

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

Front

How can scientists use DNA to study evolutionary relationships?

Back

By comparing the DNA sequences of different species to find similarities and differences.