Perhaps if it were worded differently - remember, I was replying to you post that stated snowcaps do not have PATN which, of course, is not true.
An Appy with no LP will have neither spots, characteristics, or color (although as you indicated if it has PATN it can pass that on).
An Appy with no PATN will have no color.
An Appy with LP and no PATN will usually have ( or develop) characteristics.
Both LP and PATN must be present for color and characteristics - the pattern being determined by the type of PATN and whether the horse is heterozygous or homozygous for LP. If it is homo for LP, in the presence of PATN, it will be a snowcap or fewspot, depending on the type of PATN, although there is some question as to whether a fewspot may just be the full expression of a snowcap. If the horse is heterozygous for LP, the pattern will be varnish roan, blanket, snowflake, or a combination of patterns, depending upon the type(s) of PATN.
It will drive you wacko - the main reason being we are dealing with polygenic characteristics rather than just one gene, and we only have some of the pieces of the puzzle...
Last edited by Faceman; 06-30-2011 at 08:41 PM.