Lecture 09

Question 1

word for ‘only in a population’

Answer 1

emergent properties

Question 2

5 cause allele frequency to change

Answer 2

inbreed
genetic drift
natural selection
mutation
migration

Question 3

quantitative genetics eg.

Answer 3

behavior, height

Question 3

single gene trait eg

Answer 3

eg.ear lobe, widow’s peak美人尖, cystic fibrosis(population bottle neck, founder effect, chromosome 7), sickle cell anemia(heterzygous confer to malaria)

Question 4

3 selection in quantitative genetics

Answer 4

stabilizing, directional, disruptive selection

Question 5

word for ‘what proportion of selection is actually passed on to the subsequent generation’

Answer 5

heritability

Question 6

breeder’s equation

Answer 6

R(response)=h(heritability)^2*S(selection)

Question 7

word for ‘breed within a closely related lineage’

Answer 7

inbreeding

Question 8

IBD=?

Answer 8

identity by descent

Question 9

genetic drift

Answer 9

genetic bottleneck: special case of genetic drift
founder effect: special case of genetic bottleneck

Question 10

灭绝漩涡英文

Answer 10

extinction vortex