Biology 1001A Lecture Notes - Fetus, Pre-Eclampsia, Blood Sugar
4 Sep 2013
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Men- worse is sexually (you could have to raise someone elses offspring) Women worse is emotionally, he could withdraw his parental investment. Which competes, which chooses can it operate on both sexes? (yes, esp. in humans however there are sex differences in sexual selective traits) Nature of jealousy between sexes is usually very different. Types of social interaction recipient benefits or is harmed. Exampels of spite in nature are extremely rare. Altruism is a special difficulty, which at first appeared to me insuperable, and actually fatal to my whole theory darwin. Mother squirrels have to call out to offspring so they know a predator is coming. Increases risk for mother as the predator can then locate the mother but the babies are nonsensible and would otherwise not survive. Type of birds forego their own opportunity for reproduction to help produce siblings. More to fitness than simply producing direct descendants.
