Genetics Help - D^V, Id, Sex link, etc

[RoostersAreAwesome]

But I know absolutely nothing about D gene except that D^V is related to Vee combs, and D^V plus rr pp will result in Buttercup combs.

So my two questions there are,
1) What do other combinations of D^V plus R- pp, rr P-, R- P- do?

I believe @halefamily_flock has some birds that match what you’re looking for.

 

[halefamily_flock]

I believe @halefamily_flock has some birds that match what you’re looking for.

I have been playing around with Spitzhauben (D^V) hybrids. Crossing with Dominique and Hamburg rose comb hens, and Cream Legbar hybrids with single combs. Breeding tests have identified that some of my rose comb girls are Rr. I don't have any pea combs in the flock.
Here's V + Single comb, from a Dominique hen who was Rr, so I have no idea what sort of recessive single comb she was carrying


Here is V + Rose


Here's another version of V + Single, on a hen. I have a new batch of roosters with several that look like this now (9 weeks old), not sure how they will ultimately develop. The single comes from Cream Legbar, which is generally pretty big & floppy (although I select mine for relatively smaller combs).


Most of the hens that are heterozygous for V, crossed with Olive Eggers (Legbar + Welsummer), turn out something like this