Originally Posted by chele721
Can anyone take a guess of what the father may have looked like based on Bella's kittens. Bella is a short hair tabby but they seem to be more medium hair.
The AGOUTI gene is what is responsible for tabby versus solid. (there is a separate gene which determines the type of tabby pattern)
The Agouti gene is dominant. Which means, if your cat carries the gene, it is a tabby.
Your mom cat is heterozygous. This means she carries one dominant gene and one recessive non-agouti gene. (If she didnt carry the non-agouti gene, she would only produce tabbies, no matter what the tom was)
Because of this, it is hard to determine what the tom was with any accuracy. He could've been a tabby also, or a solid. But we know he was a non-agouti carrier, because your solid kittens do NOT carry the Agouti gene at all. They are homozygous for the recessive non-agouti gene.
Because of how much white one of your kittens has, and how little white Bella has, we know the tom has some white on him. But we still dont know if he was a tabby with white, or black with white.
He also could've been blue (gray). None of the kittens are dilute, but if Bella doesnt carry the dilute gene she could mate with a million grays and never produce a dilute (gray) kitten.
Hope I didnt get too confusing. Sorry I couldnt tell you more
As for their hair length... if you do end up with a long-haired kitten, it doesnt mean the father was long-haired... the long-haired gene is also recessive, so in order to get a kitten with long-hair each parent has to be a carrier, but they dont have to be long-haired themselves. Two short-hairs can have a long-hair, but two long-hairs can only produce long-hairs.