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Lecture

PSYC 101 - Sept 19, 2011

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Department
Psychology
Course
PSYC 101
Professor
Catherine( Cathy) Rankin
Semester
Fall

Description
Sept 19, 2011 PSYC 101 The Selfish Gene By Richard Dawkin - One of the realizations that grew out of Sociobiology was the importance of getting more of your genes in to the next generation. This could be accomplished in ways other than having your own offspring (i.e. by taking care of siblings). - *Unit is important not gene Social Insects - Hymenoptera – wasps, bees, ants (all social insects except termites are in this order) - Haplodiploidy – unfertilized eggs become males and are haploid, fertilized eggs become females and are diploid. - Degree of relationship determines behaviour Degree of Relatedness - Ma Pa Sis Bro Son Dau. Nephew/niece Fem ½ ½ ¾ ¼ ½ ½ 3/8 Male 1 0 ½ ½ 0 1 ¼ * “You’re better off helping your mom raise more sisters so you pass on more of your gene.” - So females benefit from raising their sisters more than from having their own daughters! Males benefit from raising their brothers and sisters. (for Haplodiploidy) - Notion of “inclusive fitness” Issues in Sociobiology - Parental Investm
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