Evolution of skin color

Discussion of everything related to the Theory of Evolution.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
Siemowit
Garter
Garter
Posts: 9
Joined: Thu Feb 14, 2008 10:32 pm

Evolution of skin color

Post by Siemowit » Thu Feb 14, 2008 10:38 pm

I would like to ask you a question about the evolution of skin color.

My friend claimed that black people would become white after 10 generations if they lived in Europe (without racial mixing). Is it true ?

I thought that evolution works slower. How long would it take them to evolve from black skin to white skin ?

User avatar
mith
Inland Taipan
Inland Taipan
Posts: 5345
Joined: Thu Jan 20, 2005 8:14 pm
Location: Nashville, TN
Contact:

Post by mith » Fri Feb 15, 2008 1:24 am

You should ask more about selection.
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

Siemowit
Garter
Garter
Posts: 9
Joined: Thu Feb 14, 2008 10:32 pm

Re: Evolution of skin color

Post by Siemowit » Fri Feb 15, 2008 8:54 pm

It seems that nobody knows the answer to my question. I have asked many people on internet (also scientists) and the only answer was when skin color probably evolved.

I would like to know how long would take that evolution. 1000 of years or rather tens thousands of years ?

Siemowit
Garter
Garter
Posts: 9
Joined: Thu Feb 14, 2008 10:32 pm

Post by Siemowit » Fri Feb 15, 2008 8:55 pm

Or maybe 10 generations ? ;)

Darby
Viper
Viper
Posts: 1278
Joined: Thu Mar 02, 2006 5:29 pm
Location: New York, USA

Re: Evolution of skin color

Post by Darby » Sat Feb 16, 2008 3:53 am

As mentioned above, the change rate is dependent on the power of the selection. With Vitamin D supplements available, there may be no real selection (although there are other factors at work).

User avatar
mith
Inland Taipan
Inland Taipan
Posts: 5345
Joined: Thu Jan 20, 2005 8:14 pm
Location: Nashville, TN
Contact:

Post by mith » Sat Feb 16, 2008 8:46 am

I mean it makes no sense to refer to number of generations...for instance if you had bacteria, one generation is like 20billion individuals--hey can have a lot more variations than say 1000 humans. Secondly, if you had no selection factor, why would you adapt in a particular direction? Let's say that being whiter wasn't harmful but not beneficial, eventually you'd be less tan...but compare that to if being white was the difference between life and death. (for the sake of this argument we assume that skin color is being carried on a couple of melanin genes).
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

User avatar
alextemplet
King Cobra
King Cobra
Posts: 5599
Joined: Fri Dec 23, 2005 4:50 pm
Location: South Louisiana (aka Cajun Country)
Contact:

Post by alextemplet » Sun Feb 17, 2008 8:00 pm

How much of skin color is genetic? Could it also have to do with diet?
Generally speaking, the more people talk about "being saved," the further away they actually are from true salvation.

~Alex
#2 Total Post Count

mcar
Coral
Coral
Posts: 493
Joined: Fri May 27, 2005 8:58 am
Location: Pilipinas a.k.a. Three Stars and a Sun (300, 000 sq Km)
Contact:

Post by mcar » Sat Feb 23, 2008 12:07 pm

In Darwin's Origin of Species, there's a part there that even food preferences could possibly be a factor to cause variation in the skin color of an animal.
---Just one act of random kindness at a time and you can change the world---

User avatar
alextemplet
King Cobra
King Cobra
Posts: 5599
Joined: Fri Dec 23, 2005 4:50 pm
Location: South Louisiana (aka Cajun Country)
Contact:

Re: Evolution of skin color

Post by alextemplet » Thu Feb 28, 2008 5:23 pm

Exactly; that's why flamingos are pink.
Generally speaking, the more people talk about "being saved," the further away they actually are from true salvation.

~Alex
#2 Total Post Count

User avatar
pankaaj
Death Adder
Death Adder
Posts: 71
Joined: Tue Jan 03, 2006 11:37 am
Location: Bharat ( a paradise unexplored)

Re: Evolution of skin color

Post by pankaaj » Thu Mar 27, 2008 11:27 am

i guess, We dont know what really affects skin colour in humans.So selection on what basis?
And why?
In human community, many factors are involved in selection like intellectual powers, way of thinking, social and economical status etc.
Skin colour is negligible, a character in selection!
Siemowit wrote:I would like to ask you a question about the evolution of skin color.

My friend claimed that black people would become white after 10 generations if they lived in Europe (without racial mixing). Is it true ?

I thought that evolution works slower. How long would it take them to evolve from black skin to white skin ?
Take it with a pintch of salt!

Post Reply

Who is online

Users browsing this forum: No registered users and 9 guests