HGG Community Forums

I don't know too much about Appy, so I can't give you an in depth answer sorry, but Snowflake only shows when it is homozygous (as it is a recessive gene), so the quickest way to tell if he is Snowflake would be to try and enter him in the Snowflake Breeders Club.

As for 'hidden' genes, that is present in Kit Promoter as well. A horse can be heterozygous for it, and not show it, but if bred to another Heterozygous or Homozygous KP horse, there is a chance of passing that gene on, and producing a foal that expresses that gene. KP is not in the colour name of a horse, but if the horse is Homozygous then you can add the horse in the Breeders Club (plus you can also see by the white clouding on the horses).
Any recessive gene presents like this, but for the horse to express the gene it must have two copies. Satin is another recessive gene.

The easiest way to tell if the horse is Homz for something recessive, is to try and add to the breeders club.

I've only answered half of your question, hopefully someone more experienced with the Appy genes can answer the other half!

GP is hidden as well. So is DP

Has to have lp to show, and only shows on the solid parts of the horse's body - not the spots. So a leopard Appaloosa with snowflake is hard to differentiate. Heterozygous form looks like heavy varnish.