Self blue Gene

[MoodyChicken]

Quote:
Really? Thanks for sharing blackdotte! That clears up a lot of confusion for me too! So, you could breed self blue to black and get blue? Yes, no, maybe so? And is it possible to get self blue from a splah and black cross? Please shed more light on this

 

[Sonoran Silkies]

Okay, so that we're not using one term to mean different things, we have laced andalusian blue (Blbl, PgPg, MlMl & CoCo)

non-laced andalusian blue (Blbl, pgpg, mlml & coco)

lavender (lavlav)

&

sooty? I^s (the charts I've seen refer to I^s as smokey) and all gene charts I've seen have it listed

I've never heard of Reynold's blue? references?

 

[Sonoran Silkies]

In the US,

- if it is called self blue, then the genes are lavender (lavlav), not blue (Bl,bl)and not an allele of dominant white (I^sI^s). Of course a bird could have all three :O

- the colour blue is expected to be laced.

Needless to say, the genes don't know geography or nationality, and don't necessarily conform to man-made standards.

It is VERY frustrating to have the same term mean different things within a relatively small set of specialized terminology.

 

[hinkjc]

I think a lot depends on what part of the world you're from. In the US, the APA refers to the color as self blue (meaning it breeds true - a self blue bird over a self blue bird makes only self blue progeny). Breeders sometimes call it lavender instead of self-blue because that is the gene used for self blue results. I am sure I read differences in the terminology from other countries, but since the question is being asked from an American, I assumed they wanted the American terminology.

 

[Sonoran Silkies]

since the question is being asked from an American, I assumed they wanted the American terminology.

Agreed.

I am curious, though about the Reynold's blue that I have never heard of, and the I^s that I have never heard used in the context of creating a "blue" bird.​

 

[blackdotte]

Reynold's blue is a reference given to the unlaced Andalusian blue of Pekins in the British Standard.
The APA Standard calls for the same unlaced Andalusian blue for OEG, describing it a Self Blue. Most other APA Standard Blues are Andalusian laced blues.
Americans are the only people in the world to call Lavender a 'self blue', the rest of the English speaking world call it Lavender, & the Europeans use 'Pearl-grey'
Smoky is so rare as to be nearly unknown in the fancy, but does breed a true breeding blue.
Hobby names always cause confusion with genetic names.
David

 

[wilds of pa]

UK BREED standard for Pekins:
Blue: a rich, pale pigeon blue, free from lacing but with, dark blue hackles in back and tails of males..however when you view some of there birds that won at shows, they are all laced reguardless of it saying free from lacing..
here if you look here you can see some of them:
http://www.pekinbantams.com/pekinbantamshows.asp


Charlie

 

[Krys109uk]

What is the order of dominance of I^s with its alleles?

 

[Henk69]

Hi,

I^s = smoky, or sooty as David calls it.
It is a revertant mutation from dominant white.
So it appeared in a flock of dominant whites as dark blue chickens.
It is dominant to dominant white I, but recessive to wildtype i+ !

I^s/I smoky
I^s/I^s smoky
I^s/i+ black

This mutation is very rare!!!

http://www.genetics.org/cgi/content/abstract/168/3/1507

 

[Krys109uk]

That's really interesting. Thank you.