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Erstellt von J yadonknow
vor mehr als 6 Jahre
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Frage | Antworten |
Altruism/ Cooperation | Effect on self Effect on others + - + Mutualistic Selfish - Altruistic Spiteful |
Explanation for selfish behaviour | Direct benefit to ID |
Explanation for spiteful behaviour | Indirect benefit to ID |
Reason for parental care | Offspring have parental genes, help maximise genetic contribution to future generations |
Coefficient of relatedness | G. similarity of 2 individuals relative to the population as a whole |
C.O.R btw. parent + offspring | 0.5 |
C.O.R btw siblings | 0.5 |
C.O.R grandparents/aunts/uncles | 0.25 |
"Genes eye view" of selection DIRECT FITNESS | Maximise reproductive success of ID it's in |
INDIRECT FITNESS | Maximise reproductive success of ID who are likely to share copies of that gene |
Inclusive fitness | Direct fitness + indirect fitness |
Kin selection is an example of | Inclusive fitness AND Altruism |
What is altruism? | Helping another individual at the cost of one's own survival and reproductive capabilities |
Why killing offspring is favourable | Kill off weaker offspring so competition is reduced, maximises their own direct fitness |
Hamilton's rule used to ___: | Identifies conditions under which altruism will be favoured due to kin selection |
Kin selection according to Hamilton's rule | kin selection causes genes to increase in frequency when r*B-C > 0 |
Hamilton's rule | r*B-C > 0 r = C.O.R btw. actor // recipient B = Benefit to rec. C = Cost to actor |
Examples of extreme altruism | Suicide + sterility in eusocial insects |
C.O.R of male drones w/ queen | Haploid 1 C.O.R w/ queen |
C.O.R of females | diploid 0.5 |
Table for C.O.R of eusocial haplodiploid insects | Male Female Mother 1 0.5 Daughter 1 0.5 Sisters 0.5 0.75 |
Naked mole rats hierarchy | Reproductive division of labour 1 reproductive queen 1-3 reproductive males |
Why are they such a close-knit hierarchy? | High COR Overlap of generations |
What sort of coop do they engage in? | Coop brooding Coop foraging |
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