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Maria Arts (237)
Lecture 18

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Department
Biology
Course
BIO152H5
Professor
Maria Arts
Semester
Fall

Description
Lecture 18 - Sexual Selection and Male Competition November 17, 2011 Behaviour (cont'd) Natural Selection and Altruism - individuals that help close relatives can improve their inclusive fitness Reciprocal Altruism - exchange of fitness benefits that are separated in time Natural Selection and Behaviour - evolution by natural selection: variation in a trait, variation in fitnes for the trait, genetic basis for the trait - evolution of behaviour: behaviours have great variation, diff behaviours have diff fitness, behaviours have a genetic basis Sexual Selection and Male Competition Sexual Selection - choosing a mate is not random "...depends on the advantage which certain individuals have over other individuals of the same sex and species in exclusive relation to reproduction." Sexual Dimorphism: Arm
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