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