Natural Selection

The change over time in populations of related species.

• biological evolution
• transition
• variation
• adaptation

These cause variations.

• mutations
• adaptations
• a desire to change
• injuries

A slight difference in an inherited trait between individual members of the same species.

• variations
• adapatations
• homologous structures
• analogous structures

An inherited trait that increases an organism's chance of surviving and reproducing.

• variation
• adaptation
• vestigial structure
• mutation

The discovery of DNA and genes proved that

• Darwin was wrong
• mutations create variations and come from genes
• we are all the same species
• bats and butterflies have a very close common ancestor

When an organism of a species is born with a variation in a trait that gives it an advantage in its environment, we call that trait an adaptation.

• true
• false

When an organism of a species has an adaptation, it will compete for resources better, survive longer and pass that adaptation on to it's offspring. This process is called

• evolution by natural selection
• artificial selection
• inbreeding
• outbreeding

What is it called when humans decide which traits of an organism are the most desirable and only allow those organisms with the specific, desired traits to breed.

• biological evolution
• evolution by natural selection
• artificial selection
• inbreeding

When an organism has a trait that allows it to blend in with its environment, we call that ____.

• mimicry
• camouflage
• lucky
• sonic hedgehog gene

Adaptations can be:

• camouflage

• ability to survive cold weather

• hunting skills

• all of the above