The complete "original turkey color pattern" genotype,
known as "normal,no mutations" bronze or wild type is wrote out like this..
b+b+ CC dd EE NN RR SlSl SpSp
Genes occur in pairs.
Each bird gets one gene from it's sire and one from its dam.
At each site (locus) there is a switch with one, two
or occasionally three options or "alleles".
The final color depends on the sum of alleles at all of the sites.
Upper case letters represent dominate genes, Lower case=recessive.
Color genes in turkeys are not always completely dominate or recessive.
The first site is the bronze site.
It has three alleles,
B black, b+ bronze(normal) and b1 black winged bronze.
(B and b1 are mutations)
Second we have the site for Color.
Three alleles at this locus;
cg gray and c white. (cg and c are mutations)
Third site is Dominate Slate;
D dominate slate,(mutation) and d(normal)
Fourth is the brown site;
E (normal) and e brown . (e is a mutation)
Fifth we have the Narragansett site:
Ng (normal) and ng narragansett (mutation).
Sixth is the Red site:
R (normal) and r red(mutation).
Seventh is the recessive slate site:
Sl (normal) and sl recessive slate (mutation)
The recessive slate gene may no longer exist
in the USA. There is evidence of it in Australia.
Eighth is the spotting site:
Sp for (normal) and sp spotting(mutation)
The spotting gene is not known to exist
in the USA any longer, there is evidence of
it still in the UK and also in Australia.
The turkey variety known as the Nebraskan
carried this gene.
There is possibly a Ninth site,The pencilling site:
This is still being studied to see if this mutation is
actually located at a different locus of it's own or
just a modifier of b1.
At this time we list this as Pn for normal and pn
for the pencilling mutation.