- Apr 19, 2009
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The frizzle gene (F, f) is an Incomplete Dominant gene, meaning there are other genes that influence whether is is exhibited or not. It can be seen in any breed that the F gene has been introduced to.
f f - wild-type, non-frizzle
F f - heterozygous for frizzle, may appear frizzle or not.
FF - homozygous for frizzle
F f birds are frizzle, which may or may not be exhibited due to other genes. Some of these birds have normal feathers or slight curling.
FF are wire-feathered, and have more issues with feather quality. In addition, they may have internal organ abnormalities ( GI tract and enlarged hearts). To avoid this, it is recommended that you do not breed 2 frizzles together, if they were Ff this would result in 25% FF birds, which would not be good healthy birds and would likely require culling. (the others would be 50% Ff frizzles and 25% ff wild-type non-frizzles). Breeding a Ff frizzle to a ff non-frizzle would lead to 50% Ff frizzles and 50% ff non-frizzles.
'So even if they do not appear frizzled, they could possibly be carrying the dominant F gene.
Interesting. Might that be what's wrong with M2Em's chick? FF -- enlarged organs?