3/28: sexual selection- what do females want? Flashcards Preview

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Flashcards in 3/28: sexual selection- what do females want? Deck (13):
1

sexual selection

type of natural selection occuring when individuals compete for mates
proposed to account for evolution of traits that appear to be maladaptive because they decrease survival

2

components of sexual selection

intrasexual selection
intersexual selection

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intrasexual selection

male male competition
review everything for this lmao

4

intersexual selection

female choice
review stuff for this

5

polygyny

1 m, multiple F

6

possible bases for mate choice

direct benefit models
indirect benefit models

7

direct benefit modlels

good resources, quality of resources

8

indirect benefit models

may not directly benefit F, sexy son (and runaway selection), good genes (and handicap)

9

sexy son and runaway selection

stalk head / eyed flies- preference arose, no genetic beefit- prouce sexy sons, higher reproductive output

10

good genes and handicap

to offspring, measure quality, HQ gemnes

11

sexy son hypothesis

even if no benefit to F, preference evolves in F prefer mate w/males that have the phenotype

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lek

displaying ground

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polyadnry

1 F, many M

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