Lesson 4 - Natural Selection (Part 1)

True

False

True

False

True

False

True

False

Organisms who have a version of a trait that provides an advantage will outcompete those who don't.

Organisms with a disadvantageous version fo a trait realize that they need to survive so they change to the beneficial one.

Organisms who outcompete those with disadvantageous version of a trait will have offspring that will have the beneficial version.

Organisms with the disadvantageous version of a trait all die, leaving only those with the beneficial version alive. Eventually the population is only made up of those individuals.

The lack of food

The fact that some were light brown and some were black

The hawk can more easily pick out some of the mice than others

The rock happened to be dark in color

True

False

they have no self-control

there is no guarantee that they will all survive

It gives a species a better chance to evolve

One trait can have many different variations, with two extremes and a lot of versions in between.

You are genetically identical to a sibling

These are traits that a person inherits from their parents

You can permanently change these traits if you wanted to.

They generally come in one version

It will have extreme versions and "average" versions.

It will have only extreme versions

One or more versions of the trait might provide a survival advantage over another

If a certain height provides an advantage to some individuals, they will out-compete those with a different variation.

Each bear can choose which variation they will have.

Diversifying selection

Stabilizing selection

Directional selection

None of the above

Diversifying selection

Stabilizing selection

Directional selection

None of the above

Diversifying selection

Stabilizing selection

Directional selection

None of the above