Exam 2 Part 7

Question 1

What are the 2 important types of genetic drift?

Answer 1

Founder’s effect, bottleneck

Question 2

Genetic drift ___ (is/is not) natural selection

Answer 2

Is not

Question 3

Few individuals that leave a population and create a new population; evolution will occur because genetic material will change from the parent population

Answer 3

Founder’s effect

Question 4

Population undergoes an event that eliminates most species in a population; those that remain have a different gene frequency than the previous population

Answer 4

Bottleneck

Question 5

Genetic differences between populations produced by the fact that genetically different individuals established those populations

Answer 5

Founder effect

Question 6

Severe reduction in the size of a population that results in only some genes surviving in the descendent population

Answer 6

Bottleneck

Question 7

What are some examples of founder’s effect?

Answer 7

Ellis Van Creveld syndrome

Question 8

What types of population commonly have Ellis Van Creveld syndrome?

Answer 8

Amish

Question 9

What is an example of the bottleneck effect?

Answer 9

Toba super volcano 70,000 years ago

Question 10

The movement of alleles between at least 2 populations; increased admixture decreases genetic differences between the groups

Answer 10

Gene flow

Question 11

What is gene flow largely dependent on?

Answer 11

Geographic distance

Question 12

Selection that favors traits that increase the success in competition for mates

Answer 12

Sexual selection

Question 13

Differences in size, shape or color between the sexes

Answer 13

Sexual dimorphism

Question 14

How do males tend to behave when they try to find a mate?

Answer 14

Direct competition, male preference

Question 15

How do females tend to behave when they try to find a mate?

Answer 15

Choose the best mate with the best genetics

Question 16

What are some examples of sexual selection?

Answer 16

Antlers, brightly covered feathers

Question 17

What are the 2 types of sexual selection?

Answer 17

Direct competition, female choice

Question 18

Big size and shape differences between males and females = _____

Answer 18

Polygyny

Question 19

Small size and shape differences between males and females = _____

Answer 19

Monogamy

Question 20

Majority of the species in a population is infertile; sterile population will help the queen in a population by passing similar genes down generations; selects for traits that help individuals that help their close relatives reproduce

Answer 20

Inclusive fitness