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Effect founder

Effect, founder

a population group with an unusual frequency of a gene due to there having been only a small number of original members ( founders ) one or more of whom had that gene. For example, the gene for huntington disease was introduced into the lake Maracaibo region of Venezuela early in the 19th century, so there are now over a hundred persons with huntington disease and at least 900 persons at risk for that deadly disease in that region, the largest known aggregation known in the world with the huntington gene.


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Re: Why do Africans have large noses and lips?

... people vs. French people's lips, is that language seems to have an effect on lips size. A lot of English people have very thin lips, especially ... attribute people's looks in a population to a possible etiology of founder effect, migration and basically gene drift. You dont always have ...

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by david23
Sun Jul 08, 2012 2:46 pm
 
Forum: Human Biology
Topic: Why do Africans have large noses and lips?
Replies: 30
Views: 186582

Founder Effect/Bottle Neck Effect and Chromosomal reversal?

... Does this sound about right? But what I was interested in was if a founder effect, or a bottle neck effect can ever leave any kind of lasting 'trace' in the genetic history ...

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by jebus197
Sun Jan 22, 2012 11:23 pm
 
Forum: Evolution
Topic: Founder Effect/Bottle Neck Effect and Chromosomal reversal?
Replies: 5
Views: 2949

Founder Effect/Bottle Neck Effect and Chromosomal reversal?

Hi once diversity has been lost due to a founder effect, or a bottle neck effect, can it ever be restored? That is to say that for example the can the ...

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by jebus197
Sun Jan 22, 2012 1:11 pm
 
Forum: Evolution
Topic: Founder Effect/Bottle Neck Effect and Chromosomal reversal?
Replies: 5
Views: 2949

Re: Spread of recessive genes

... another evolutionarily advantageous gene. Aptitude also mentioned the founder effect, which is another common cause. It could also just be due to random selection (genetic ...

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by zombiesagan
Tue Nov 15, 2011 9:07 pm
 
Forum: Genetics
Topic: Spread of recessive genes
Replies: 5
Views: 7118

Re: Spread of recessive genes

... individual. The reason why Estonians would have blue eyes is due to the founder effect. In the past, a blue-eyed human, or a group of closely related humans with blue eyes, ...

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by aptitude
Mon Oct 10, 2011 3:05 am
 
Forum: Genetics
Topic: Spread of recessive genes
Replies: 5
Views: 7118
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