Quote:
Originally Posted by pstinard  Wow, according to this website, short hair is dominant! That means that either one of Minnie's parents was a rare short-haired Yorkie, or she has a rare spontaneous dominant mutation. I'm betting that she has a rare mutation. Now, I hope that Minnie's short hair doesn't have anything to do with her current itchy skin problems... Hair Length |
Pardon me for mentioning this, but...and I know I am not a geneticist nor a breeder of the Yorkshire Terrier...but it is my understanding that recessives only express when a homozygous gene pair exists. Otherwise, when a heterozygous pair exists, the recessive gene remains visibly 'invisible' unless it or a modifier can create a 'blended' outcome.
So, if short hair is dominant, and long hair is
recessive in the Yorkshire Terrier, then wouldn't all Yorkshire Terriers with long hair be, by default, homozygous for that recessive gene pair?
If so, how exactly, without a mutation or modifier, or non-Yorkshire Terrier in the immediate parental mix, could two (2) homozygous recessive long-haired dogs produce a dominate homo-or-heterozygous short-haired dog?