Causes Of Evolution

Question 1

Mutations

Answer 1

Raw material for evolution.

Question 2

A change in DNA affects _____.

Answer 2

Proteins

Question 3

Genetic Drift

Answer 3

Changes in gene pool due to chance.

Question 4

Allele / Gene frequency

Answer 4

The number of a certain gene out of the gene pool as a whole.

Question 5

Founders Effect

Answer 5

A portion of an existing population breaks off and creates its own group.

Question 6

Bottleneck Effect

Answer 6

A natural disaster decreases the variation and a lot of alleles are lost.

Question 7

Gene Flow

Answer 7

Movement of alleles between populations.

Question 8

Immigration

Answer 8

Movement of a population into another one.

Question 9

Emigration

Answer 9

A portion of the population leaves another population

Question 10

Non-random Mating

Answer 10

Animal mating based specific characteristics

Question 11

Stabilizing Selection

Answer 11

Moving towards an average.

Question 12

Directional Selection

Answer 12

Moving towards one extreme

Question 13

Disruptive selection

Answer 13

Moving towards both extremes

Question 14

Sexual Seletion

Answer 14

Reproductive success depends on desirability.

Question 15

Artificial Selections

Answer 15

Selecting for traits that benefit Indians.