genetics ?

[nicalandia]

I googled it and the website that popped up is hosted by me...
Sorry for my remark, but I wouldn't mention this gene. Easy to confuse with the autosomal one, with which it should switch symbol/name

y is recessive and sex linked...!


"There is a sex-linked recessive white skin mutation - y"
http://www.edelras.nl/chickengenetics/mutations2.html

 

[Sonoran Silkies]

Quote: I'll hazard a guess that y stands for "yellow," the dominant version.

 

[Sonoran Silkies]

I googled it and the website that popped up is hosted by me...
Sorry for my remark, but I wouldn't mention this gene. Easy to confuse with the autosomal one, with which it should switch symbol/name

I very much agree that it is quite confusing, and I almost didn't mention it. From the table at the link:

w

W+, w​

Yellow skin, wild type (white skin) Rec

y

Y+ y​

Sex-linked white skin Sex-L. Rec​

 

[Henk69]

I'll hazard a guess that y stands for "yellow," the dominant version.

Exactly, but the dominant wildtype allele is not yellow skin!

 

[tadkerson]

McGibbon documented the gene so he named it y. If you isolate and work with a gene, you get to name the gene. The reason he named it y was because if you only saw the phenotype of the adult, the dominant color is yellow, a W+/w or W+/W+ and Y+ bird has white skin with W+ being epistatic to Y+. A w/w bird and Y+ bird does have yellow skin- no epistasis in this case. In this scenario the Y+ allele is dominant and does express yellow skin. The alternative allele will express white skin.

Tim

 

[nicalandia]

McGibbon documented the gene so he named it y. If you isolate and work with a gene, you get to name the gene. The reason he named it y was because if you only saw the phenotype of the adult, the dominant color is yellow, a W+/w or W+/W+ and Y+ bird has white skin with W+ being epistatic to Y+. A w/w bird and Y+ bird does have yellow skin- no epistasis in this case. In this scenario the Y+ allele is dominant and does express yellow skin. The alternative allele will express white skin.

Tim

thanks tim, I will make sure I will save this info

 

[Sonoran Silkies]

It would be interesting to have a table that lists each gene (and allele), who discovered it, when, and whatever paper or journal it was documented in.