AP Biology Unit 7 Review

Front

What are fossils?

Back

Fossils are the preserved remains or traces of organisms that lived in the past, showing clear changes in an organism over time, the environment they lived in, and the time period.

Front

What is polyploidy?

Back

Polyploidy is a condition in which an organism has more than two complete sets of chromosomes, often leading to rapid speciation.

Front

How does genetic variation affect survival?

Back

The more genetic variation a population has, the more likely it is for some individuals to survive environmental changes and challenges.

Front

What does it mean for a species to be extinct?

Back

A species is considered extinct when there are no remaining individuals alive anywhere in the world.

Front

What is an example of evolutionary change not due to natural selection?

Back

A volcanic eruption that kills many individuals in a population is an example of evolutionary change not due to natural selection.

Front

What are vestigial structures?

Back

Vestigial structures are anatomical features that have lost most or all of their original function through the course of evolution.

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What are homologous structures?

Back

Homologous structures are body parts in different species that share a common ancestry, even if they have different functions.

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is speciation?

Back

Speciation is the evolutionary process by which populations evolve to become distinct species.

Front

What role does mutation play in evolution?

Back

Mutations are changes in DNA that can lead to new traits in organisms, contributing to genetic variation and evolution.