Colors

[R2elk]

Lo...not that I'm at all shocked to hear Nugget trumped poor Blue's thunder. Such a brat.

That may not be the case. She may well be homozygous for the full dotting gene which would be the reason all the keets came out fully dotted.

 

[R2elk]

What color birds do you think that ericwaddles flock would produce?

I hesitate to even make a guess since there are too many unknown variables.

I agree that the white crossed with the solids should produce pieds. The interesting thing about the white guineas is that homozygous for white produces a white bird and masks all the other possible color genes that the bird is carrying. There is no way without DNA results and/or test breedings to know what pied colors would come out.

 

[Sydney65]

I wish this guy were still around, bc he did breed those colors. Infact I think his post is even wondering what would come of it. But his follow up pics of hatch are deleted. But look at his gorgeous adults! Some look brush painted. (zoom in)
https://www.backyardchickens.com/th...how-some-different-colors.630116/post-8425854

 

[Sydney65]

I myself am pretty randomly breeding whatever colors I get from whichever birds pair up. However, the nomenclature I’m using is from groups that are currently breeding for newer guinea fowl colors, so they are the ones who seem to be able to get workable results from their genetics system. There have been published results of tests breedings in guinea fowl that support royal purple as being the result of being homozygous for the margarogene factor (m, semi-pearling)

https://academic.oup.com/jhered/article-pdf/87/2/138/6452301/87-2-138.pdf

This same paper also discusses the lavender or blue gene (i) as being recessive to wild type (I, pearl grey), with a lavender bird being homozygous for i/i in order to express the lavender color. And, I think that this paper agrees with you, that a Coral blue bird would have the i/i genotype as well as the m/m genotype.

What color birds do you think that ericwaddles flock would produce?

That's hillarious..I was reading that article earlier (sommes). I noticed instead of buff and buff dundotte, he referred to them as dun and dundotte, and then went on into "blue dundotte."

 

[R2elk]

I wish this guy were still around, bc he did breed those colors. Infact I think his post is even wondering what would come of it. But his follow up pics of hatch are deleted. But look at his gorgeous adults! Some look brush painted. (zoom in)
https://www.backyardchickens.com/th...how-some-different-colors.630116/post-8425854

This was our real guinea expert.

https://www.backyardchickens.com/th...how-some-different-colors.630116/post-8430883

 

[Sydney65]

This was our real guinea expert.

https://www.backyardchickens.com/th...how-some-different-colors.630116/post-8430883

Oh,I just meant that person posed the same question-but didn't come back to show the results.
I've been combing through Peeps' posts for awhile now!

 

[Sydney65]

That's hillarious..I was reading that article earlier (sommes). I noticed instead of buff and buff dundotte, he referred to them as dun and dundotte, and then went on into "blue dundotte."

Oh, @R2elk , I wasn't mocking the author. He was actually quoting work by geneticist Ghigi, referring to mutation of genes resulting in new colors, ie dun and sky blue. I'm probably repeating @mixed here, but I think the point is that as mutations progress, different shadings or characteristics emerge.
Consider Bella & my confusion w/you saying she was brown. It wasn't me stomping my feet saying, "I want you to accept that this bird is BD!", but trying to fig out how she could be brown when brown wasn't in the equation. But if modifier genes disrupt dominance, then you end up with a variance from the original characteristic- a flaw from the standard.
I'm not great at deciphering genetic code, but I do understand that modifier, or mutant genes, can have a strong affect on susceptibility or resistance to conditions,or it can just create characteristics, like not having downs syndrome, but
having webbed fingers-a flaw from the standard (and we won't ever tell my highschool buddy that I used that characteristic as an example).
That's why I was so intrigued when I started seeing some adult feathers emerge in her keets that looked like a dotted rich brown rather than the gray black. But like the RP, it didn't really stand out unless the lighting was just so & I finallygave up trying to justify it.

 

[R2elk]

geneticist Ghigi, referring to mutation of genes resulting in new colors, ie dun and sky blue.

I wouldn't consider Sky Blue to be due to a mutation. I regularly make Sky Blue. From what I can tell, Sky Blue is just 2 blue color genes and two no dotting genes or rather a Coral Blue without any dots.

What the difference between a Powder Blue and a Sky Blue is what gets me. They are both two blue color genes with 2 no dotting genes.

 

[Mixed flock enthusiast]

I wouldn't consider Sky Blue to be due to a mutation. I regularly make Sky Blue. From what I can tell, Sky Blue is just 2 blue color genes and two no dotting genes or rather a Coral Blue without any dots.

What the difference between a Powder Blue and a Sky Blue is what gets me. They are both two blue color genes with 2 no dotting genes.

The no dotting gene would be the attenuate gene, I believe. Since you asked, Jessica Farmers pictorial indicates that one has two semipearl and the other two fully pearled genes. However, you don’t see the pearls on either due to the attenuate gene.

 

[Sydney65]

The DNA sequence mutates during cell division, the color is the result. If the DNA copies the mistake, then it passes it on to offspring. Eventually the "mistake" becomes the standard.
I'll go out on a limb and assume that you aren't bringing in fresh blood to your flock every season, so the bulk of your flock has shared DNA. Likewise, you always say "if I breed this to this,I get this" - so if you control the mating, you have some control of the genetics to produce what you want.

Is that why they deleted the bulk of the colors from the association's color chart? Such a disservice.