Comments | eric_lippert: No more blondes? No!

eric_lippert

No more blondes? No!

Mar 09, 2006 14:04

Snopes today has an interesting article about a persistent urban myth that human blondes are gradually going extinct. However they do not actually go into any of the scientific and mathematical arguments that show why this is extremely unlikely. Two mechanisms are proposed in the myths - that blondes are going extinct because blondeness is ( Read more... )

Comments 6

whoa_breathe March 10 2006, 19:06:06 UTC

Good to know that my people are not dying out. :P

Hm, green eyes must be recessive also.(Duh) and there are far fewer people with green eyes than blue eyes....this post makes me want to research these things.

eric_lippert March 10 2006, 19:36:57 UTC

The actual situation is far more complex than the brief sketch I presented here, which I should have emphasized was just for explanatory purposes ( ... )

whoa_breathe March 10 2006, 20:23:06 UTC

So interesting!

Yes, my dad has green eyes and my mom has blue eyes...so even on a surface level it makes sense that my eyes are green.

eric_lippert March 10 2006, 19:46:23 UTC

Also, I should clarify that there is not necessarily a correlation between a gene being recessive and its expression being more rare. All that matters is that BB x bb = Bb x bB. It's possible for bb to be very large and BB to be quite small, eg, if BB = ~0.1%, Bb = ~3%, bB = ~3%, bb = ~94% then there will be about ~6% of the population with the dominant trait and 94% with the recessive trait.

adventure_girl March 23 2006, 01:52:48 UTC

You're mostly right ( ... )

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