I find it's easy to understand if you overlay the NN gene onto a black/blue/splash genetics chart.He’s beautiful!
I’m trying to understand how the genetics work.
Will a NN roo with a clean naked neck (no feathers) produce all NN chicks even if the mother is fully feathered?
How about if the roo has a “bow tie” or a “bib”?
Are the genes different with the hens?
My cockerel Angus has a bib and so does my pullet Emily.
Agatha, however, has a bow tie.
NaNa = two copies of the gene. Very small to no bib/bowtie. Same as Splash is two copies of the Blue gene.
Nana = one copy of the gene. Bigger bib/bowtie. Same as Blue is with one copy of the Blue gene.
nana = no gene. Fully feathered. Same as black.
If you combine a bird with two copies with a bird with no copies... ie.. NN with nn, or Splash with Black, you get all offspring with one copy. So all Nana with big bib, or all Blue.