Natural Selection/Mechanisms of Evolution

Question 1

What determines if a trait becomes an adaptation?

Answer 1

A trait could be an adaptation if it increases an organisms ability to survive and reproduce.

Question 2

Compare and contrast a trait versus an adaptation.

Answer 2

Trait:

Question 3

Compare and contrast natural selection with artificial selection

Question 4

Ducks in the Marin Headlands lay more eggs than can survive to adulthood.

Which principle of Natural Selection does this demonstrate?

Answer 4

Overproduction

Question 5

Why do organisms of a population look similar but look different?

(Example: humans have hair, but different colors of hair)

Question 6

Give an example of natural selection

Answer 6

Giraffes with longer necks will get more food and survive, making more offspring.

Question 7

When two populations are geographically close to each other, there will be (MORE/LESS) genetic variation. This will (INCREASE/DECREASE) the rate of evolution.

Answer 7

When two populations are geographically close to each other, there will be LESS genetic variation. This will DECREASE the rate of evolution.

Question 8

Gene flow

Answer 8

Individual migrating to a different group and introducing its genes

Question 9

Genetic drift

Answer 9

Change in the gene pool of population due to random chance

Question 10

How does genetic drift impact the genetic variation of small populations?

Answer 10

Very impactful