Unit 6 Review

Front

What is the process in which populations CHANGE gradually over time?

Back

evolution

Front

What is it called when the better adapted organisms survive and pass traits along to offspring?

Back

Natural Selection

Front

What does it mean if a fossil of an extinct dinosaur shows similarities to that of a bird?

Back

The extinct dinosaur and modern bird share a common ancestor.

Front

What term describes genetic differences between organisms of the same species?

Back

Variation

Front

Based on the theory of natural selection, what will the future beetle populations look like in a few years if orange beetles are better adapted?

Back

Orange

Front

What is the term for 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 a change in the heritable characteristics of a population over successive generations?

Back

Evolution

Front

What is the significance of variation in a population?

Back

Variation is essential for natural selection, as it provides the raw material for evolution.

Front

What is a common ancestor?

Back

A common ancestor is an ancestral species from which different species have evolved.

Front

What is the difference between artificial selection and natural selection?

Back

Artificial selection is the process by which humans breed specific traits, while natural selection is the process by which nature selects traits that enhance survival.