Having kept coloured shetlands for years I have only just bothered to find out about colour genetics. I had no idea it was so simple or so fasinating. If I had kept records of the different lambs each ewe has had I would by now know exactly what genes they all had. As it is I will need to start the process now.
My Moorit ram is easy to work out because brown and unmarked are both recessive so I know he has homozgotes (matching pairs of the brown gene and the unmarked gene. I also know that he has a hetrazygote (not matching pair) of spotty and unspotty. Thats because he has produced spotty lambs and because spotty is recessive a lamb needs a homozygote of spotty genes (one from each parent) to be spotty.
I'm starting to get obsessed with this!