White Sport Legbar genetics

dixiebackyard

Chirping
Mar 27, 2015
55
24
66
Alabama
I have a very limited knowledge when it comes to genetics and color traits and so forth. Are the white traits of my legbar sport going to be dominant or recessive? Has anyone experimented running these type of genes over a fibromelanosis chicken. What genes would and would not be carried
 

Wappoke

Chirping
Dec 5, 2015
336
88
81
I have a very limited knowledge when it comes to genetics and color traits and so forth. Are the white traits of my legbar sport going to be dominant or recessive? Has anyone experimented running these type of genes over a fibromelanosis chicken. What genes would and would not be carried
If you crossed a standard plumage color legbar with another standard plumage color legbar, and a legbar offspring is pure white, then the white bird is most likely recessive white. So the trait is recessive. Fibromelanosis is a complicated expression by a sex-linked gene and a number of gene complexes ( sections of DNA) that interact to produce the black-boned chicken (fibromelanosis).

The genetics behind the trait is too complex to discuss on this forum.

The darkest and blackest chickens do not carry recessive white. The silkie is a fibromelanotic chicken and carries recessive white.

As a general rule, if you cross a fibromelanotic chicken with a white shanked, white skinned chicken (no dermal melanine), the cross will not produce fibromelanotic offspring.

The expression of fibromelanosis can vary depending on the genes a bird inherits. Making a prediction concerning the degree of black pigments in a chicken is difficult without knowing the genetic lineage of both parents.
 
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