Evolution & Natural Selection

Front

New traits (genetic variation) comes from:
- Random Mutations
- The environment
- Adaptations
- Animals choosing new traits

Back

Random Mutations

Tags

NGSS.MS-LS3-1

Front

What is needed for Evolution to happen?

Back

Genetic Variation, Selective Pressure, and Inheritance

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Front

If a new trait DOES NOT help an organism survive, what may happen to it? Options: Not survive or reproduce, Survive & reproduce, Survive, Die

Back

Not survive or reproduce

Front

What happens to new traits that HELP organisms survive over time?

Back

That trait becomes MORE COMMON in the population

Tags

NGSS.MS-LS4-4

Front

Which traits were selected for in whale ancestors?

Back

Traits that helped them move in water

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Front

The change in traits over time in a population is known as

Back

Evolution

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Front

Body parts of organisms that are the same in structure and position but different in function and shared by a common ancestor.

Back

homologous structures

Tags

NGSS.MS-LS4-2

Front

Body parts that function like each other, but are different in structure and NOT shared by common ancestor

Back

analogous structures

Front

Body parts that have lost their original function.

Back

vestigial structures

Front

Two organisms that are closely related would have

Back

Very similar DNA sequences

Tags

NGSS.HS-LS3-1

NGSS.HS-LS4-1