[ExI] Genetic recombination

[spike at rainier66.com]

-----Original Message-----
From: extropy-chat <extropy-chat-bounces at lists.extropy.org> On Behalf Of Stuart LaForge via extropy-chat



>... If N is 3, the chances of the two fellers 
>> getting the same sequence is 2^-3 or one in 8.  Ben does that sound 
>> right?

That's not quite how it works. Centimorgans are defined as a probabilistic approximation of distance between two genes on a chromosome. So each centimorgan is is defined as a distance along a chromosome that would result in a 1% chance of crossover. ...Stuart LaForge



Ja, thanks Stuart.  After I posted the original comment to Ben, I brushed up on something I haven't looked at for a long time and realized I had a mistaken definition of centiMorgan.  Once I fixed that, I got the 10^-33 answer for the probability of a particular sperm cell and a particular ovum combining identically twice, if the experiment could be repeated arbitrarily many times.  Someone who knows must have looked at that question at some point but I don't know how to find the right answer.  I am not a DNA hipster, only a rocket scientist.  Rocket science is not nearly as complicated as biology, not by orders of magnitude.

Experts and AI hipsters among us, what is the probability of a particular sperm and a particular ovum combining identically twice, if the experiment could be repeated indefinitely?  In Jason's brilliant mind blowing video, the hotel guy used one in two hundred million to produce Nora Alvarez, but I know that is a vast understatement for how unlikely is that comely young lady, leading me to conclude she (and we) are computer simulations.

spike