Originally Posted by Poseidon
Pardon my lack of elaboration. My point was that it is not common and appears to randomly show up because one copy does need cream to show up. It would be very uncommon to have two unknown pearl parents produce a PrlPrl foal. Not impossible, obviously, just uncommon.
Actually, the Pearl gene (also known as the Barlink factor originally) was singled out because two pearl heterozygouts (Prl/Prl) produced an unknown dilute foal. It is responsible for many "what the heck" foals of Spanish origin as well. So pearl/pearl carriers have been noted to produce the surprize dilute foal, then pearl/creams have popped up as well (thus having Het pearl be "visible" but the horse appears to be a double cream when not genetically possible from a single-cream parent set). What is not possible is double cream with pearl, or double pearl with cream, according to the current research. The fine details have still never been released by the labs offering the test.
Leah in TX