Kin selection and altruistic behavior

Kin selection and altruistic behavior - Kin selection and...

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Kin selection and altruistic behavior many species of animals that live in groups give warning calls which alert other individuals about predators, etc. How could this behavior evolve when making the call alerts the predator to the callers location and increases the possibility of the caller becoming prey. Mammals that nurse their young: major energy investment for the mother may be thought to reduce her fitness, but make obvious sense sine the individuals that benefit are close relatives (offspring). Put in fitness terms: how could a trait evolve that lowers individual fitness? Key point is the term individual . If the ones that benefit from the behavior are related , the loss in individual fitness may be regained in inclusive fitness , i.e., individual fitness plus fitnesses of relatives . W. D. Hamilton argued that an altruistic trait could evolve if cost to altruist/benefit to recipient < genetic relatedness ( C/B < r ) where r is an estimate of the probability of the donor and recipient having allele
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This note was uploaded on 11/05/2011 for the course BIOLOGY MCB2010 taught by Professor Jessicadigirolamo during the Fall '10 term at Broward College.

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