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  4. What is the basis of centrifugal hair growth patterns?
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What is the basis of centrifugal hair growth patterns?

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Offline FuzzyUK (OP)

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What is the basis of centrifugal hair growth patterns?
« on: 03/12/2012 19:30:44 »
Why does hair grow from the center of the crown in a spiral like manner? Does it always spin out in catharine wheel fashion in a clockwise direction and if so, why not anticlockwise?
« Last Edit: 04/12/2012 22:36:59 by chris »
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Offline evan_au

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Re: What is the basis of centrifugal hair growth patterns?
« Reply #1 on: 10/12/2012 10:41:12 »
If you were going to look for exceptions, I would start here: http://en.wikipedia.org/wiki/Situs_inversus

...because the mirror-image of clockwise is counterclockwise.

Correction: It appears that genes controlling hair orientation are different from the genes controlling orientation of internal organs (see URL from RD, below)
« Last Edit: 10/12/2012 19:37:19 by evan_au »
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Offline RD

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Re: What is the basis of centrifugal hair growth patterns?
« Reply #2 on: 10/12/2012 19:09:47 »
Quote
8.4% of right handed people and 45% of left handed people have counterclockwise hair-whorls. His research indicates that a single gene may control both handedness and hair-whorl direction
https://en.wikipedia.org/wiki/Hair_whorl
« Last Edit: 10/12/2012 19:11:46 by RD »
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