Lecture 10

Question 1

selection types(方向)

Answer 1

stabilizying
directional
disruptive

Question 2

selections types

Answer 2

artificial
natural
sexual
(kin selection- clonal multicellularity)
(group selection& species selection- aggregative multicellularity)

Question 3

artificial selection 3 eg

Answer 3

pigeon
dog
high and low oil content in corn kernel

Question 4

natural selection 3 condition

Answer 4

intrinsic increase in the number
competition for limited resource
survival of the few

Question 5

color polymorphism in Cepaea snail eg

Answer 5

observed by Cain and Shepard

anvil rock

beech wood land(B&P)

meadow(G)

deciduous woodland
spring(B&P)
summer(G)

Question 6

sexual 2 eg

Answer 6

dung beetle, Northern fur seal

Question 7

MM combat 2 eg

Answer 7

iguana combat over territory, M w/ territory or larger territory attract F

giraffe weevil

Question 8

sperm competiton 2 eg.

Answer 8

fruit fly, sperm second dislodge驱逐 and poison sperm of first or swamp by V other sperm

insect, penis go to spermatheca(where sperm is from) and dislodge驱逐 sperm of others

Question 9

female will be choosy 2 eg

Answer 9

peacock, bird of paradise, pufferfish

Question 10

female will be choosy专门拿出来讲的例子

Answer 10

barn swallow, the longer tail, more promiscuous淫乱 F succumb屈服