Common Ancestry P.1

Front

What are homologous structures?

Back

Structures in different species that share a common ancestor but have different functions.

Front

What is required for natural selection to occur?

Back

Genetic variation in species.

Front

What must a species be able to do in order to survive?

Back

Reproduce successfully.

Front

What can be determined by observing embryos of different organisms?

Back

The organisms share a common ancestry.

Front

How do fossils provide evidence for evolution?

Back

Fossils show how life forms present today are different than those from the past.

Front

What are vestigial structures?

Back

Body parts that have lost their original function through evolution.

Front

What is the significance of genetic variation in a population?

Back

It allows for adaptation and survival in changing environments.

Front

What is the theory of evolution?

Back

The scientific explanation for the diversity of life, stating that species change over time through natural selection.

Front

What is a common ancestor?

Back

An ancestral species from which multiple species have evolved.

Front

What are analogous structures?

Back

Structures in different species that have similar functions but do not share a common ancestor.