BIOL-4700 Study Guide - Midterm Guide: Kin Recognition, Genetic Correlation, Handicap Principle
20 Mar 2017
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If you only look at the cost and not the benefit then you would call them an altruist. For the indirect fitness: to prevent inbreeding, to avoid cannibalism, environmental kin recognition may lead to thinking non-kin are really kin. If mom comes back to feed kids in her nest because she knows this is her nest, she will feed everyone in the nest. But if a cuckoo leaves its eggs in another bird"s nest, then that bird"s egg will benefit: how do animals recognize kin, they use 3 primary mechanisms, recognition alleles, greenbeard affect. Altruism directed only towards individuals with the same altruism gene. Altruism directed only towards individuals that share: many times, similar genes = similar smell (why it"s called the many genes armpit effect) Environmental: cannibalism is clearly a selfish behavior, so why is it considered to be altruistic in toads, nest mate effect. Altruism directed towards individuals that were raised together.
