What is carried on the 'W' gene?

[Poultry Friend]

Are the E genes carried on the w gene? Which genes are on this chromosome? I know silver isn't, but which ones are?

 

[nicalandia]

Are the E genes carried on the w gene? Which genes are on this chromosome? I know silver isn't, but which ones are?

NO, the Extended black (E allele) gene is not sex chromozome W, as its human counterpart(Y chromosome) the W chromosome is diminutive and basically useless

 

[Poultry Friend]

Which genes are carried, or not carried, on the w gene?

I am trying to figure out the genetics of my flock and getting kinda confused since I have always delt with XY and feather genetics is a tad more complicated then fur!

 

[nicalandia]

Which genes are carried, or not carried, on the w gene?

I am trying to figure out the genetics of my flock and getting kinda confused since I have always delt with XY and feather genetics is a tad more complicated then fur!

of all the genes that can affect plumage color none are located on the W gene, a few on the Z chromosome, the Z chromosome is the dominant sex chromosome in chickens, the Z is just like the X chromosome in humans,

 

[Poultry Friend]

of all the genes that can affect plumage color none are located on the W gene, a few on the Z chromosome, the Z chromosome is the dominant sex chromosome in chickens, the Z is just like the X chromosome in humans,

So no genes that effect color are on the w gene that the hen carries?
Not even e+?

What about pattern genes like penciled or laced? Or modifiers like dun, lavender, ect?

 

[Henk69]

There is no w "gene". W is a small chromosome with no known genes that affect domesticated traits. There are a few necessary genes on there though but nothing to worry about.

The e-locus is autosomal, meaning not on a sex chromosome (Z). No difference in inheritance between males and females.

Male birds have 2 Z-chromosomes, female birds have 1 Z chromosome and its odd partner w.
So the reverse of mammals.

 

[Sonoran Silkies]

Also, there are not just Z & W chromosomes. Chickens have 39 chromosome pairs. All the e-alleles are at the same location (locus); likewise the dominant white alleles are all at a another location, the lavender alleles are at another, etc.

So, E or e+ or any of the other e-alleles are always found at the same place (on microchromosome 11). In a particular bird, only one of these alleles can be present on its chromosome, and another on its chromosome pair. http://www.edelras.nl/chickengenetics/linkages.html lists the known locations.

 

[Poultry Friend]

OK. Thanks! You're right, I was using the terminology wrong. *blushes* Please don''t let my old AP microbiology teacher know.

I guess what I was looking for was a list of genes located on the Z chromosome that are not found on the W chromosome. That linkage chart fits the bill perfectly! Thanks! Looks like the only two that effect color are silver and barring.

Thanks again! That helped a lot!

 

[Henk69]

There is also chocolate (choc) and inhibitor of dermal melanin (Id) and slow feathering (K)

 

[nicalandia]

So no genes that effect color are on the w gene that the hen carries?
Not even e+?

What about pattern genes like penciled or laced? Or modifiers like dun, lavender, ect?

all of the genes you mention are called autosomal, meaning they are on other none sexual chromosomes,