Topic 40

Question 1

Outcrossing

Answer 1

where two unrelated individuals have been crossed to produce progeny. Same breed but have no closer relationship than 4-6 generations. Most recommended for purebred breeders

Question 2

Results of outcrossing

Answer 2

Increases genetic diversity; Also can increase the number of individuals that carry a recessive gene

Question 3

Effective population size

Answer 3

Theoretical amount of individuals in a population that are able to give offspring (no elderly or immature); measured by counting

Question 4

For theory of population

Answer 4

two copies of a gene will be sampled as the next generation is produced

Question 5

Population size N

Answer 5

2N genes

Question 6

bottleneck effect

Answer 6

when a population’s size is reduced for at least one generation. Because genetic drift acts more quickly to reduce genetic variation in small populations, undergoing a bottleneck can reduce a population’s genetic variation by a lot,

= some genes may dissapere, or gain a broader place in the population