I have a project involving crosses of dominiques and American games. Dominiques females are homozygous p+/p+;R/R (no pea comb; has rose comb) and males are one game homozygous p+/p+;r+/r+ (no pea comb; has single comb) while second game I thought was heterozygous for pea comb (P/p+; r+/r+). First has sired rose comb offspring only while second is throwing about 50% rose comb and 50% something that is not rose comb, pea comb or walnut comb. According to chicken comb calculator the second bird should have produced rose comb p+/p+; R/r+ and walnut comb offspring p+/P;R/r+. Got none off second phenotype. I do not think what I thought to be pea combs in my "pea combed" games are pea combs. Homozygous form is assymetrical with a lot more size than typical of Aseel games from which the pea comb in my games supposedly derived. They heterozygote looks almost intermediate between pea and single comb. Is it possible another allele exist at P locus that codes for a different type of comb? Another locus that codes for another type of comb and over ride r locus for single comb?