Behavioural

... species could even have the same genes and the same range of alleles of these genes yet be unable to interbreed due to something as trivial as a behavioural difference in the mating ritual. The biological world is in a constant state of change. What we call species are discontinuities that we ...

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... whole episode has been discussed in a couple of books. More interestingly though, subsequent twin studies have reached similar findings to Burt. Behavioural traits are significantly heritable. "Behavioral genetics has repeatedly found that the “shared environment” — everything that siblings ...

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... among dogs? That dogs have been specifically (consciously) bred for physical and behavioral traits is not necessarily too far off from the behavioural, physical, ethnic distinctions among humans shaped by the "accidents" of geography and climate, and the willful contributions ...

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... or Onagers. And we can do it now by looking the biome where zebras live, their distribution, their origin and evolution, and of course, their behavioural adaptatations. So, Zebras as I said, prefer open plains ( E. burchelli and E. grevyi ), arid zones and mountain or rocky biomes ( E. zebra ...

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I think a behavioural argument is a better fit. A human usually wakes up from an alarm of some kind, not following the nightly sleep rhythm very much. If you develop a natural rhythm where you go to bed at the same time every night ...

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