BIOLOGY 1M03 Lecture Notes - Lecture 19: Parental Investment, Anisogamy, Sexual Selection
14 Jun 2020
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Document Summary
Minor marriages in taiwan: arranged marriage, betrothed prospective bride adopted by groom"s family during infancy, major marriages are arranged, but partners meet as adults (ideally at the alter, psychological predisposition to avoid mating with relatives. Sexual selection: males of most species are generally indiscriminant, inter-sexual selection (female choice, males: competitive and indiscriminant, females: coy and choosy, anisogamy: morphologically dissimilar gametes. Results in more male-male competition and ornamentation (female choice) Intra-sexual selection - within sex competition for reproductive access (usually male-male competition) Male and female are de ned by the size of gametes they produce. Limitations of human reproductive success: parental investment. Human records in reproductive success: emperor of morocco fathered 888 children, women"s record: 69 children in 27 pregnancies. Sexual jealousy: previous forced choice studies indicate that: Males are most concerned about sexual in delity. Females are most concerned about emotional in delity: pietrzak at el looked at three types of data. Emotional responses (anger, rage, humiliation, fear, pain)
