The Selfish Gene, Richard Dawkins
Richard Dawkins

The Selfish Gene

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427 yazdırılmış sayfalar


Evgeny Shvarov
Evgeny Shvarovbir izlenim paylaşıldı3 yıl önce

Идея с репликаторами, как признаками живого: живое можно убить


An-nisa Pratiwi
An-nisa Pratiwialıntı yaptı3 ay önce
If you look at the way natural selection works, it seems to follow that anything that has evolved by natural selection should be selfish. Therefore we must expect that when we go and look at the behaviour of baboons, humans, and all other living creatures, we shall find it to be selfish.
Maos Mawon
Maos Mawonalıntı yaptı3 ay önce
By no means: Dawkins shows that the selfish gene is also the subtle gene.
Basira Gasimli
Basira Gasimlialıntı yaptı4 ay önce
Blackheaded gulls nest in large colonies, the nests being only a few feet apart. When the chicks first hatch out they are small and defenceless and easy to swallow. It is quite common for a gull to wait until a neighbour's back is turned, perhaps while it is away fishing, and then pounce on one of the neighbour's chicks and swallow it whole. It thereby obtains a good nutritious meal, without having to go to the trouble of catching a fish, and without having to leave its own nest unprotected.

More well known is the macabre cannibalism of female praying mantises. Mantises are large carnivorous insects. They normally eat smaller insects such as flies, but they will attack almost anything that moves. When they mate, the male cautiously creeps up on the female, mounts her, and copulates. If the female gets the chance, she will eat him, beginning by biting his head off, either as the male is approaching, or immediately after he mounts, or after they separate. It might seem most sensible for her to wait until copulation is over before she starts to eat him. But the loss of the head does not seem to throw the rest of the male's body off its sexual stride. Indeed, since the insect head is the seat of some inhibitory nerve centres, it is possible that the female improves the male's sexual performance by eating his head. If so, this is an added benefit. The primary one is that she obtains a good meal.

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