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Thread: Why did straight hair evolve?2636 days old

  1. #31
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    Yes and my 2 year old reminds me of that every day.

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  4. #32
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    Plant of Life = Biological Magic 麻 EliasAlucard's Avatar
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    Straight hair has always been the norm, it's afro curls that evolved. Of all primates, Negroes are the only specimen with curly hair.
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    Most animals have straight hair, as do most apes, so it makes sense that curly hair is more evolved. I think curly woolly hair is cooler in hot climates. Just a guess...

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    Straight hair predominates in mammals in general, but, to answer the question, I would associate straighter hair which is usually more oily with dry, and cold and dry climate.
    Even looking at and making comparisons with the hairs of mammals:

    North Asians (and East Asians, due to vast distance from Africa) have a different grade of hair that's extremely straight and sheeny. Reminiscent of a Seal's (yes seals are not bald, they infact have fur).

    I notice fairly straight to wavy hair in the Middle East and East Africa is a bit more shaggy looking, like this Bison's:



    ---------- Post added 2011-08-13 at 22:59 ----------

    Quote Originally Posted by larali View Post
    Most animals have straight hair, as do most apes, so it makes sense that curly hair is more evolved. I think curly woolly hair is cooler in hot climates. Just a guess...
    I'd have to agree. There are no people in cooler climates with curly hair (Inuit aka Eskimos probably have the straightest hair on planet Earth despite getting kindof dark), and when people from cooler climate go to the tropics in humid regions their hair secretes an ooze.

    ---------- Post added 2011-08-13 at 23:01 ----------

    Quote Originally Posted by larali View Post
    Yes and my 2 year old reminds me of that every day.
    kids kinna do remind you of that, lol. You can sit back for a second and marvel at the similarity.
    Last edited by EclectYummination; 2011-08-14 at 05:16.

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    What about curly dogs? Have they always existed or is it an adaptation?



    Its kinda like the question: "What came first: The chicken or the egg?" but what came first? Curly or straight?
    Last edited by wompwompwomp; 2012-07-06 at 23:43.
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    Quote Originally Posted by wompwompwomp View Post
    What about curly dogs? Have they always existed or is it an adaptation?



    Its kinda like the question: "What came first: The chicken or the egg?" but what came first? Curly or straight?
    Dogs have been specifically bred by humans to achieve a certain look and features.

    This is what scientist say is the closet looking to the first dogs.


    http://www.msnbc.msn.com/id/27240370...s-ago-ate-big/

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    What could they have bred a dog with to make it have curly hair? A sheep?
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    I believe it was insulation.
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    How can straight hair provide better insulation than curly hair, when it is curly hair that might be trapping air better between hair layers? If you remember the basics of f.e. clothing insulation, the air traps provided in knitted jumpers etc. is the main thing that keep a person warm. Then why hair would be any different?

    I have straight hair and I don't feel like they provide special protection against cold. OK, they do provide SOME protection, but it is not enough in f.e. freezing temperatures.

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