Lab Genetics Article Centers around the "silver labs", but touches on the concept of the pointing lab as it relates to the breeding of Weims into Lab lines by Kellogg.
That is an interesting article and makes a case for the introduction of the Weims to get Silver. But even the author is only speculating that crossing is what happened to the PL. The PL looks exactly like any other lab and does not have the dd gene of the Silvers. Maybe someday they will find a PL gene that seperates the PL, but until then (and after having one for 10 years and hunting with many non-PLs)I think that they are just breeding for the tendancy. I think that it is no different than breeding for a long ranging pointer, for instance. Eventually, a good breeder is going to be known for having only pointers that are well suited to hunting from horseback.
