Refers to human reproductive behaviour and the differences between male and female sex cells.
Male gametes - sperm - smallest, mobile, produced easily and in vast quantity
Female gametes - eggs or ova - largest, static, produced at intervals, limited quantity, less opportunities to reproduce.
Females must be more selective and have developed strategies to maximise successful reproduction
Consequence of anisogamy - no shortage of fertile males but limited fertile females
Gives rise to 2 types of sexual selection
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