EvolutionMechanisms160-page12

EvolutionMechanisms160-page12 - Growling, clicking, or...

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Evolutionary Mechanisms - 12 Behavioral Adaptations are used to confuse or distract potential predators. There are also behaviors that confer survival benefits such as nocturnal activity in desert habitats in which daytime activity would be dehydrating, using habitat to warm (or cool) such as lizards sunning or insects sunning before moving from flower to flower. Behavior is also used in courtship, as discussed. Some common protective behaviors include: Mother Bird with broken wing Twisting and turning when fleeing Enlarging body or presenting largest dimension to predator Rearing up on hind legs to look bigger Making warning sounds that indicates that a potential predator might be harmed by encounter.
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Unformatted text preview: Growling, clicking, or rattle sounds are common. Altruism is behavior that endangers the individual to protect other members of the population. This occurs most commonly among closely related individuals, and is called kin selection. To understand altruism in the evolutionary context you need to remember that what counts in the contribution of alleles to the next generation's gene pool. If "my" behavior results in the next generation's gene pool having a higher frequency of similar alleles to mine, it can be favored. Altruism is observed in many social animals, such as wolves. In a wolf pack, only one pair breeds. All others help to protect and raise the single litter....
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