Pressures

... in these stable states, they can typically be classified as species - but remove that stable state, introduce genetic variation, change selective pressures and the lines between species will likely become blurred. Take for example; dogs. Selective pressure on Canis lupus, pre domestication, was ...

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... that is key to the organisms habits would have a greater effect. The study I'm reffering to went by the idea that increased environmental pressures would lower population levels, and thus increase the chance of genetically isolated populations to increase. It's simple, and more complex ...

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... that is key to the organisms habits would have a greater effect. The study I'm reffering to went by the idea that increased environmental pressures would lower population levels, and thus increase the chance of genetically isolated populations to increase. It's simple, and more complex ...

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... theories which have no way of being tested, all served up to us as if they were actually operational science. What are the greater selection pressures in the north? Interesting. I've always wondered how fish can isolate--it seems that they isolate themselves by instinct i.e. schools, which ...

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... only about 10,000 year so to speciate, and I've also heard speciation takes place more quickly in northern climates due to greater selection pressures.

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