Comb questions

[kesrchicky16]

I'm start a set of backyard mix eggs. I know I'll get some "donor hen" clues by color and a couple obvious traits (Brahma and polish) but I was wondering about combs and how that genetics works.

I had 2 Roos (thus the setting now) they were brother's from the same father. Grandpa was a Silver Laced Wyandotte. Broad chested, rose comb beautiful shiny green tail. My roos were identical in coloring but Roo-dolph (alpha and deceased) was build like grandpa. Sheldon is taller, thinner, standard comb.

Hen combs: 5 pea, 1 rose, standard, and a few wavy (is that different then standard or a defective sub set?)

How will the combs help me guess at parentage? Is rose a recessive? Can it help me determine which brother roo was daddy?

 

[BYC910]

It all depends of pureness of breeding in the roosters . I already know you have a straight combs close enough in your SLWs to produce a straight comb SLW rooster . In my experience crossing GLW's to BCMs the wayndotte rose comb has domanited over the marans straight comb in every chick that hatched .

 

[kesrchicky16]

Cool. I know my 2 roos were backyard mix. They were advertised as "free alarm clocks." LOL. Their roo (grandpa) was a SLW. I don't know how pure he was.

My first hatching (aka fine you broody piece of ****) I had 2 hatch out if six eggs. I wasn't set up for chicks and neither are still alive but I had a EE hatch with a pea comb and a little yellow fluffy with a standard comb.

Here are pics of my roos.

Still have this one.

 

[Lady of McCamley]

Here is my understanding of comb genetics for pea, rose, and single (others may refine):

2 genes control pea expression. 2 genes control rose expression. A chick receives one set from each parent.

Pure pea comb is shown as PPrr. 2 pea genes (being pure bred) and no rose genes.
Pure rose comb is shown as RRpp. 2 rose genes (being pure bred) and no pea genes.

Pea is dominant. Rose is dominant. If no rose genes are present, 1 pea will express pea comb. If no pea genes are present, 1 rose will exhibit a rose comb.

If no rose or pea genes are present, it is a single comb. Single comb is absence of other modifiers...no rose or pea genes. It is a single comb.

If BOTH pea and rose are present, you get a walnut comb.

Wave and funk happen when mixed comb types are bred, and can simply happen even in breeding lines.

Pure breeds, like the pure Brahma hens, should have PP. The hen will offer one of her P genes each time. She has no rose genes, so will offer no rose genes (rr).

If your rose comb hen was pure, she will be RRpp. (2 rose genes). If not, or simply hatchery quality, she could be Rrpp (1 rose comb gene).

Your standard single comb hen will be rrpp...no rose or pea combs to offer.

So then you work the Punnett Square math running your crew over each rooster.

Single Combed Rooster
The single comb rooster won't add anything to the comb, so the hen's comb will dominate.

Your brahma mixed chicks from him should be pea combed (and foot feathered).

Your rose comb hen with that single comb rooster will produce rose comb chicks 50% of the time, and single comb 50% of the time if she was a mixed gened. 100% rose comb chicks if she was a pure breed.

Wyandotte Rose Comb mix rooster
Since your rose comb rooster was a mix, we know he was Rrpp.

Rose is dominant over the single comb hen, so will produce 50% rose comb and 50% single comb...since only 1 rose gene is available to offer....and hopefully some other color marker to know her chicks.

That roo with the Brahma gets a bit trickier. Brahma will be PPrr (if pure). Your rooster was Rrpp.

So doing Punnet Square math (if I did the square right) your genetic chances are:

50% RrPp....which will produce some type of walnut comb...both rose and pea expressing produce walnut

50% rrPp....which will produce a pea comb

That rose comb mixed rooster with the rose comb hen will produce rose comb chicks 100% if the hen was pure. 50% rose, 50% single if the hen was Rrpp....and hopefully with some color to track.

That rooster over the single comb hen, assuming she is truly rrpp, will produce rose combs 50% and single combs 50%.

So you will have a mixture of chicks with that bunch. You will know Brahma is involved if a pea comb or a walnut show up.

However, the rose comb could come from the rose comb hen or the single hen.

Whew...hope I got all that right
LofMc

 

[kesrchicky16]

Here is my understanding of comb genetics for pea, rose, and single (others may refine):

2 genes control pea expression. 2 genes control rose expression. A chick receives one set from each parent.

Pure pea comb is shown as PPrr. 2 pea genes (being pure bred) and no rose genes.
Pure rose comb is shown as RRpp. 2 rose genes (being pure bred) and no pea genes.

Pea is dominant. Rose is dominant. If no rose genes are present, 1 pea will express pea comb. If no pea genes are present, 1 rose will exhibit a rose comb.

If no rose or pea genes are present, it is a single comb. Single comb is absence of other modifiers...no rose or pea genes. It is a single comb.

If BOTH pea and rose are present, you get a walnut comb.

Wave and funk happen when mixed comb types are bred, and can simply happen even in breeding lines.

Pure breeds, like the pure Brahma hens, should have PP. The hen will offer one of her P genes each time. She has no rose genes, so will offer no rose genes (rr).

If your rose comb hen was pure, she will be RRpp. (2 rose genes). If not, or simply hatchery quality, she could be Rrpp (1 rose comb gene).

Your standard single comb hen will be rrpp...no rose or pea combs to offer.

So then you work the Punnett Square math running your crew over each rooster.

Single Combed Rooster
The single comb rooster won't add anything to the comb, so the hen's comb will dominate.

Your brahma mixed chicks from him should be pea combed (and foot feathered).

Your rose comb hen with that single comb rooster will produce rose comb chicks 50% of the time, and single comb 50% of the time if she was a mixed gened. 100% rose comb chicks if she was a pure breed.

Wyandotte Rose Comb mix rooster
Since your rose comb rooster was a mix, we know he was Rrpp.

Rose is dominant over the single comb hen, so will produce 50% rose comb and 50% single comb...since only 1 rose gene is available to offer....and hopefully some other color marker to know her chicks.

That roo with the Brahma gets a bit trickier. Brahma will be PPrr (if pure). Your rooster was Rrpp.

So doing Punnet Square math (if I did the square right) your genetic chances are:

50% RrPp....which will produce some type of walnut comb...both rose and pea expressing produce walnut

50% rrPp....which will produce a pea comb

That rose comb mixed rooster with the rose comb hen will produce rose comb chicks 100% if the hen was pure. 50% rose, 50% single if the hen was Rrpp....and hopefully with some color to track.

That rooster over the single comb hen, assuming she is truly rrpp, will produce rose combs 50% and single combs 50%.

So you will have a mixture of chicks with that bunch. You will know Brahma is involved if a pea comb or a walnut show up.

However, the rose comb could come from the rose comb hen or the single hen.

Whew...hope I got all that right
LofMc

I love you. Do you want to have chicks together.

Also what the *** is a walnut comb?

ETA: googled it. WOW this could get interesting. Also I will have to recheck my polish but I think she has a pea comb hiding under her poof so she probably isn't a pure bred polish since they are supposed to have a V-comb.

 

[Lady of McCamley]

Silkies have walnut combs. They look like, well, a walnut.

Comb types below:

 

[Lady of McCamley]

Found this for you:

 

[Lady of McCamley]

...and we haven't even touched your Polish with the "v" comb....I have no idea on the genetics of the "v"...if it is dominant or what.

But fortunately, that top knot should present most of the time to give you a clue for them...and the "v" with rose should get interesting.

My guess is the "v" over the single rooster will simply be some sub-set of the "v" comb

LofMc

 

[kesrchicky16]

Ok seriously @Lady of McCamley , you are my favorite person right now. That will eventually change to my next hero but for now enjoy your spotlight and throne.

 

[kesrchicky16]

...and we haven't even touched your Polish with the "v" comb....I have no idea on the genetics of the "v"...if it is dominant or what.

But fortunately, that top knot should present most of the time to give you a clue for them...and the "v" with rose should get interesting.

My guess is the "v" over the single rooster will simply be some sub-set of the "v" comb

LofMc

I will check her tomorrow but I know she doesn't have a "v"