Atruisim Flashcards
What determines the fate of a heritable trait?
how it affects the fitness of the traits carriers
Who described the Theory of Inclusive Fitness?
W.D Hamilton 1964
Hamilton’s Rule
fitness increased by helping relatives to survive and reproduce, not necessary offspring
Inclusive Fitness
sum of direct and indirect reproductive success
how does % of founder genes differ with each generation?
halves
Kin selection advantage depends on 3 values
benefit to recipient (B)
cost to altruist (C)
coefficient of relatedness (r)
describe conditions where kin selection favors altruism.
the sum of benefit and relatedness outweighs the cost
universal aspects of kinship:
ego-centred kin terminology, gender distinctions, organisation of closeness and relatedness, self-concept corresponding to place within kin network,
cooperation and solidarity,
encouragement to help collateral kin
knowledge of blood relatives
use of kinship terminology to influence non-kin behaviour
describe how altruism is affected by genetic relatedness:
help directed to closer related kin
altruism in the Titanic:
women, especially when in a couple more likely to survive. men in couples less likely to surivive
how is bequeathed affected by the coefficient of relatedness?
decrease in % from r= 0.5, 0.25 and <0.25
gender differences in wealth allocation to surviving spouse:
men leave money to their spouses, irrespective of surviving children
why does grandparent investment in grandchildren vary?
paternity uncertainty
why does grandparent investment in grandchildren vary?
paternity uncertainty
trend in increasing feelings of warmth towards grandparents:
Father’s Father, Father’s Mother, Mother’s Father, Mother’s Mother
