Comb Genetics

[jhamblin]

What combs are Dominant? And what if you crossed a rose comb with a single comb??

 

[nicalandia]

Quote:
Rose comb, Pea comb, are dominant over single comb


Quote:
you will get a rose combed bird..

 

[jeslewmazer]

But You can still get some Straight combs if you cross a Rose with a Straight.


Here is some more info to read... https://www.backyardchickens.com/web/viewblog.php?id=9280-Comb_Genetics

 

[nicalandia]

Quote:
that is correct if the Rose combed bird was Heterozygous for Rose Comb(only one copy of it)

 

[jhamblin]

Alright!! Thanks!!

 

[Sonoran Silkies]

Quote:
that is correct if the Rose combed bird was Heterozygous for Rose Comb(only one copy of it)

Right, but if the rose combed bird was pure for rose comb, the offspring would all be rose combed.

Pea comb and rose comb combine to give a walnut comb.

 

[kfacres]

Quote:
that is correct if the Rose combed bird was Heterozygous for Rose Comb(only one copy of it)

Right, but if the rose combed bird was pure for rose comb, the offspring would all be rose combed.

Pea comb and rose comb combine to give a walnut comb.

I think that should be cushion, not walnut...

 

[Sonoran Silkies]

Quote:
Right, but if the rose combed bird was pure for rose comb, the offspring would all be rose combed.

Pea comb and rose comb combine to give a walnut comb.

I think that should be cushion, not walnut...

Nope. I don't recall all the additional genes that create cushion. But R/R P/P is walnut.

 

[nicalandia]

Quote:
I think that should be cushion, not walnut...

Nope. I don't recall all the additional genes that create cushion. But R/R P/P is walnut.

Words from the Good Doctor..

R. Okimoto :

Walnut and cushion comb are the same things. There are modifiers that make a rose comb smooth or bumpy. Wyandottes have the smooth short rose comb coming into fashion. While rose comb bantams still have the long pointed rose comb with bumps on it. Cushion comb probably has the smooth modifiers.

The buttercup comb is due to another dominant gene D. The buttercup comb is less dominant than the Lefleche type two horned duplex comb. The alleles are called Dv for the most dominant duplex comb and Dc for the cup type comb. Dv is found in Polish and is associated with cavernous nostrils (big nose holes in the beak). The Dc allele seems to cut the single comb down the middle and makes two combs. The buttercup allele is probably responsible for the stag horn duplex comb found in some Houdans. The crest modifies comb morphology by shortening the comb and pushing it more to the forhead.

The standard states that Silkies have walnut combs, but the original silkies had a trifid comb. The trifid comb was characterized by Punnett as being a rose comb variant. He did not see pea comb in his silkie crosses and he was the one that determined the genetics of walnut comb, so if Silkies had walnut Punnett was the guy that should have known this.

There is a recessive combless type called Breda. The original wild Red Junglefowl had combless females. These seem to be extinct in the wild and the wild populations seem to have domestic blood in them now. There is still a line of Red Junglefowl in the US that has the original type.​

 

[stephanie1992]

i crossed a rose with a single before and got a pea looking comb