I had a litter in April, three Fawns, three Brindles. I had one Brindle with maybe 8 stripes, then one loaded, and one medium, dam is lightly marked, sire was Fawn, how do modifying factors really work? I know they restrict or allow, but what causes that?

Good question! I really don't know the answer in canines, but will take a stab at it along with asking even more questions...........

To me a "modifying factor" can fall into several catagories.

I'm guessing brindle would be a 'pattern" gene...? In that case, there would be modifying factors in at least 3 catagories and maybe more...? Pigment, Color and Density for sure.

After that, beats me.....?

I've been trying to figure that one out LD. I know in Dals you can get a wide range of spotting from perfect to so heavy it looks like patches.