Search found 9 matches

by Siemowit
Fri Feb 15, 2008 8:55 pm
Forum: Evolution
Topic: Evolution of skin color
Replies: 9
Views: 7451

Or maybe 10 generations ? ;)
by Siemowit
Fri Feb 15, 2008 8:54 pm
Forum: Evolution
Topic: Evolution of skin color
Replies: 9
Views: 7451

Re: Evolution of skin color

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 ?
by Siemowit
Thu Feb 14, 2008 11:04 pm
Forum: Genetics
Topic: Are you opponents or followers of eugenics ?
Replies: 1
Views: 2291

Are you opponents or followers of eugenics ?

Are you opponents or followers of eugenics ?
by Siemowit
Thu Feb 14, 2008 11:02 pm
Forum: Genetics
Topic: Many children in all generations
Replies: 2
Views: 1547

Many children in all generations

Would it be genetically healthy for the population if some families would give birth to many children in every generation ?

For example Tom would have 5 children. Each of those children would give birth to 5 children. Each of those 5 would give birth to another 5 and so on.
by Siemowit
Thu Feb 14, 2008 10:53 pm
Forum: Genetics
Topic: Positive eugenics and regression to the mean
Replies: 0
Views: 1360

Positive eugenics and regression to the mean

Would positive eugenics work ? Or the effects would be pulled back by regression to the mean ?
by Siemowit
Thu Feb 14, 2008 10:51 pm
Forum: Evolution
Topic: Regression to the mean
Replies: 1
Views: 1920

Regression to the mean

Why does regression to the mean work (as Galton proved) ?
by Siemowit
Thu Feb 14, 2008 10:47 pm
Forum: Evolution
Topic: Weak selection
Replies: 2
Views: 3077

Weak selection

Is there any example of weak selection working very slowly (but indeed working) ? Or effects of weak selection would be completely erased by regression to the mean ?
by Siemowit
Thu Feb 14, 2008 10:43 pm
Forum: Evolution
Topic: Selection and regression
Replies: 0
Views: 1550

Selection and regression

Why does natural selection work if there is a regression to the mean ?
by Siemowit
Thu Feb 14, 2008 10:38 pm
Forum: Evolution
Topic: Evolution of skin color
Replies: 9
Views: 7451

Evolution of skin color

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...