8th Chapter10 The Environment & Change Over Time (Evolution)

Front

What determines how closely related two species are?

Back

How recently they shared a common ancestor.

Front

_______ are remains of life from an earlier time.

Back

Fossils.

Front

Change in the hereditary features of a type of organism over time is ________.

Back

Evolution.

Front

Studying the relationship between organisms by comparing their structures is called __________.

Back

Comparative anatomy.

Front

Scientists can tell whether organisms are closely related by comparing their________.

Back

DNA.

Front

What is the process by which species change over time?

Back

Evolution.

Front

What do we call the preserved remains or traces of organisms from the past?

Back

Fossils.

Front

What is the study of the similarities and differences in the anatomy of different species?

Back

Comparative anatomy.

Front

What is the significance of a common ancestor in evolutionary biology?

Back

It indicates how closely related different species are.

Front

What is the term for the genetic makeup of an organism?

Back

Genotype.