----- Original Message ----- From: "David Hobby" <[EMAIL PROTECTED]> To: "Killer Bs Discussion" <[email protected]> Sent: Friday, November 24, 2006 10:45 PM Subject: Re: It ain't the genes that are different, it's the number of copies . . .
> [EMAIL PROTECTED] wrote: > ... >> The genome is already messy. The notion that are chromosomes have a >> neat lineup of genes is incorrect. There are insertions into the >> middle of genes (introns). Many genes are spread over >> discontinuous aspects of a single chromosome. Some insertions into >> the middle of genes destroy function but many do not. > > Yes, I know that. But if everybody's genome is messy > in the same way, then their chromosomes can still match > up quite well. Are there variations between people in > terms of what/where the introns are? > > I wish Alberto would chime in, but it seems that you don't > understand the question: "Isn't it sometimes bad when an > individual has a pair of chromosomes that don't match up > well?" (Which would be produced if their parents had > different numbers of various genes, right?) > > As far as I can tell, the answer is that it's not that > bad. (Although I get the sense that we don't yet understand > enough about the role of wrapping/unwrapping DNA to give > a definitive answer.) It's certainly bad if it gets to the > point where chromosomes don't segregate properly at meiosis, > but that's when the match ups between chromosome pairs are > really poor. > What is it?.........1/3 to 1/2 of conceptions spontaneously abort?!!? Does this connect here? And how would it work if it does? xponent Too Many Chemicals Maru rob _______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
