Human reproductive/sexual selection
- Created by: FuturePsychologist
- Created on: 23-02-15 13:09
AO1: Darwin- species evolve thru natural selection & sexual selection
- competition for mates b/w individuals affect evolution of certain traits
- any physical trait that enhances reproductive success will gradually be passed down /enhanced over evolutionary time
- Darwin: animals possess certain traits that make them seem attractive to opposite
Sex and make them compete better
- eg: male peacock's colourful tail.
1) Zahavi's handicap proposal^ any indicator that is costly to produce+displayed must have
Strong & healthy genes- applies to peacocks
Different sexual selection pressure occurs b/w genders due to diff in gametes
- males: millions of sperm/never sure of paternity/suffer little cost to reproduction
Natural selection…
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