Evolution

A trait or change in lifestyle that helps a plant or animal survive in its environment

• adaptation

• evolution

• homologous

• vestigial

An organisms with the “best” traits (adaptations) will live longer and

reproduce more than others, causing changes in the population over time by acting on traits that are heritable

• Evolution

• Natural Selection

• Fitness

• Variation

Genes that are beneficial to the species will....

• evolve a new species

• will not be passed down to its' offspring

• become more common over time

• cause the extinction of a species

Individuals don't evolve! __________ do!

Which one does not increase variation?

• Gene flow

• Migration

• Mitosis

• Crossing Over

What is required for natural selection to occur?

• Competition for unlimited resources

• Gradual warming of the Earth

• Environmental disasters

• Genetic variation in species

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

• Consume a wide variety of food

• Maintain a constant body temperature

• Destroy competing species

• Reproduce successfully

Which of the following set of evidence best supports the hypothesis that two species are related to each other?

• Presence of homologous structures and similar DNA

• Presence of homologous structures and a similarity in method of reproduction

• Presence of homologous structures and a similarity in diet

• Presence of homologous structures and analogous structures

An inherited characteristic that increases an organism's chance of survival

• adaptation

• evolution

• fitness

Structures with the same parts have different functions; suggests that organisms share a common ancestry

• vestigial structures
• homologous structures
• adaptive radiation
• fossil