selection will favour properties that enhance the stability and long term survival of groups, even if individuals suffer as a consequence of that selection
1 of 14
what did Williams (1966) say about group selection?
a population that divides its resources into stable individual territories is better adapted than one where there's a chaotic scramble for resources
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what did Wynne-Edwards (1964) say regarding group selection?
each group or species controls its rate of consumption, only those which possess population regulating genes survive to reproduce
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what does Williams, Maynard-Smith and Dawkins say against group selection?
the most adaptive evolution occurs through individual selection, adaptive traits are selected for as the benefit the survival/ reproduction of individuals
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what does Wynne-Edwards say to argue against individual selection?
groups consisting of selfish individuals die out quickly due to over exploitation of resources
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what does Maynard-Smith (1964) say to counteract Wynne-Edwards?
groups don't go extinct fast enough for group selection to be an important part of evolution- individuals will go extinct faster
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why can there be no pure altruistic behaviours?
behaviours detrimental to individuals that express them can't evolve through natural selection
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what does Williams (1966) say regarding natural selection and group selection?
the two are completely different. individuals are expected to behave to maximise their chances of reproduction
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what does Dawkins (1989) say about individuals?
they're expected to behave selfishly
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are evolutionary stable strategies ultimate or proximate?
always ultimate and are blind strategies of genes
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how do we know if a strategy is stable or not?
a strategy isn't stable if it can be invaded by another strategy
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name a long term study that provides evidence for individual selection
David Lack and Chris Perrins great *** study in wytham woods
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what did Lack and Perrins find?
most pairs lay only 8 or 9 eggs even though they can lay more
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what's been said about group section more recently?
Wilson and Sober (1994) and Nowak et al (20100 argue that case against group selection was overstated. groups can be organised like individuals so can still be vessels for selection
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Other cards in this set
Card 2
Front
what did Williams (1966) say about group selection?
Back
a population that divides its resources into stable individual territories is better adapted than one where there's a chaotic scramble for resources
Card 3
Front
what did Wynne-Edwards (1964) say regarding group selection?
Back
Card 4
Front
what does Williams, Maynard-Smith and Dawkins say against group selection?
Back
Card 5
Front
what does Wynne-Edwards say to argue against individual selection?
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