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Politics : Foreign Affairs Discussion Group -- Ignore unavailable to you. Want to Upgrade?

To: Ilaine who wrote (212416)	1/10/2007 3:41:55 PM
From: neolib	Respond to of 281500

Which makes me wonder whether it's also not unheard of for bits of the mother's nuclear DNA to hitch a ride on the Y-chromosome, as well. Since DNA can be transcribed from one chromosome to another, yes, I'm sure that happens. It is a matter of how rare such events are. One of the debates in evolutionary genetics is in fact how important horizontal gene transfer across species has been, which aught to be rarer than chromosome swaps within a species. Mitochondrial DNA is considered to be a cross species event BTW.