Re: DNA and ffingerprints
"Chimerism is a recognised condition, thought to be very rare."
Correction: Chimerism is a recognised condition, thought to be very common.
For example, 90% of women who have been pregnant or had unprotected sex (which could mean, they were pregnant and miscarried without realising it) have Y chromosomes.
98% of men have some cells that don't have Y chromosomes, generally, they are an exact match for their mother's cells. It is also possible that they got cells from older brothers / sisters including ones that didn't make it to birth via that route.
Biting the hand that feeds IT
