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- #39,941
Here's an intresting post regarding shank color made by Village Chicken (who is a bit of a genetics guru) awhile back:
There are two ways a leg is colored. The skin on the outside, and then the deeper skin tissue can also be colored.
White and Yellow are on the outside. White is dominant and can hide Yellow genes.
Any white shanked siblings of chicks with yellow legs can carry yellow into your next generation.
In order for a chick to show yellow legs, BOTH parents had to carry the yellow. In that pairing, one in four will be yellow, two will carry, and one will be pure white.
The dermal melanin under the skin gives a bluish color.
White + dermal melanin gives us slate or blue legs
Yellow+ dermal melanin gives greenish or Willow legs.
There is a gene that inhibits dermal melanin in birds that would otherwise have dark legs. (our light shanked BCM). It is a sex-linked gene. Males have two, hens only one. That is why BCM hens can have darker shanks than their male counterparts. Two copies of the ID gene is like barring, or blue, it lightens more than one copy.
Clown - I totally agree with you, but it could be that these things are simply not important to the folks you're referring to. Some folks breed "mostly" for egg color; nothing wrong with that, but it would be nice if they'd be honest about the issues in their flocks, to be sure. I'm with you - I always let folks know what I'm working on, and what I have seen in my flock(s).
There are two ways a leg is colored. The skin on the outside, and then the deeper skin tissue can also be colored.
White and Yellow are on the outside. White is dominant and can hide Yellow genes.
Any white shanked siblings of chicks with yellow legs can carry yellow into your next generation.
In order for a chick to show yellow legs, BOTH parents had to carry the yellow. In that pairing, one in four will be yellow, two will carry, and one will be pure white.
The dermal melanin under the skin gives a bluish color.
White + dermal melanin gives us slate or blue legs
Yellow+ dermal melanin gives greenish or Willow legs.
There is a gene that inhibits dermal melanin in birds that would otherwise have dark legs. (our light shanked BCM). It is a sex-linked gene. Males have two, hens only one. That is why BCM hens can have darker shanks than their male counterparts. Two copies of the ID gene is like barring, or blue, it lightens more than one copy.
Clown - I totally agree with you, but it could be that these things are simply not important to the folks you're referring to. Some folks breed "mostly" for egg color; nothing wrong with that, but it would be nice if they'd be honest about the issues in their flocks, to be sure. I'm with you - I always let folks know what I'm working on, and what I have seen in my flock(s).