DNA markers and testing

A DNA marker is a sequence of bases at a unique physical location in the genome, which varies sufficiently between individuals that its pattern of inheritance can be tracked through families and/or it can be used to distinguish among cell types. A genetic marker may or may not be part of a gene.

A DNA marker is a sequence of bases at a unique physical location in the genome, which varies sufficiently between individuals that its pattern of inheritance can be tracked through families and/or it can be used to distinguish among cell types. A genetic marker may or may not be part of a gene.