Re: recombination question


"Perplexed in Peoria" jimmenegay@xxxxxxxxxxxxx wrote:-
As a novice I find that in this beautifully incredible science
Along the same lines as your question, crossover is somewhat
understandable as a random process for the 22 Somatic Chromosomes.
But what mechanism controls the crossover in the vastly different X
and Y Chromosomes?

My understanding is that the X crosses over in women (who have two of
them) during the meiosis leading to the egg. X does not cross-over
in men. Y never crosses over.

JE:-
What can complicate things for genes which can cross over is the process of
double cross over:

http://www.ndsu.nodak.edu/instruct/mcclean/plsc431/linkage/linkage3.htm

Regards,

John Edser
Independent Researcher

edser@xxxxxxxxxxxxxx


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