parental investment

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  • Created by: gilli
  • Created on: 26-02-15 11:35
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  • Parental investment Trivers
    • Paternal investment
      • Costs       male produce unlimited sperm, walk away after conception, indiscriminate mating less costly
        • Infidelity cuckoldry humans long term  mating invest resources men fear sexual infedility, women fear shift in emotional focus
    • Maternal investment
      • why???Investment greater 4 women young humans born earlier in development cf other species immature, dependent on mothers, pre natal and post natal care , parental certainty cf to males
      • how?????costs great time, resources limited gametes,  energy. different potential maximum reproductive success        .random mating more costly
      • maternal grand parents invest more certainty of maternity cf to paternity


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