Are rose combs dominant or recessive?

[Organics North]

I am just beginning to look at the possibility of creating a rose comb Marans...
Pinkchick just sent me this link!
https://www.backyardchickens.com/forum/viewtopic.php?id=20206&p=2

Look at post #18 here is the answer....

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[Sonoran Silkies]

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Ok interesting, so is that why I've heard Rose Comb bantam breeders say to use the occasional single combed rooster for more fertility?

I was answering the questioned asked. An R/r+ male is more fertle than an R/R one. Pea comb is another gene, and has not impact on fertility. Using a single combed cock will introduce the r+ allele back into the rosecombed birds and increase the fertility of the males (no fertility difference between R/R and R/r+ females.