kwilds
Well-Known Member
I have a litter of 2 week old mini rex. 3 of them are castor. 2 have a very light coloured belly and the 3rd has a darker grey belly. The dad has the darker grey belly too but most of the pictures/descriptions of castor mini rex show the light coloured belly. Is the grey belly acceptable for showing or would it get disqualified? What gene is it that affects the belly colour? The doe is a black otter and of course has a very distinct white belly. I thought that the A gene was completely dominant over the at but would the at gene cause the castors to have a whiter belly?