BYC Genetic/Breed Calculator Huge Task Ahead!

[nicalandia]

Not in the case of a Silkie cock over say Leghorn hens.
@nicalandia back me up here please.

That is correct.

Ive been mentioning this for many years now, While FM is an Autosomal gene(not sex linked) it depends on the sex linked id+ gene to fully express, that means that a Fm/Fm id+/id+ rooster(Silkie, Cemani etc) is crossed with a hen that has clear yellow or clear white shanks the result will be that both progeny will be Fm/fm+, but only the females will be id+/-(from silkie or cemani sire) so only the females from such cross will have black skin... The males from such cross will be Fm/fm+ Id/id+ so they will have clear white skin.

If the cross has clear yellow/white shanks rooster over a cemani or silkie hen all of the progeny will have clear white skin

 

[Brahma Chicken5000]

If the cross is a clear yellow/white skin rooster over a cemani or silkie hen all of the progeny will have clear white skin

Didn’t know the last bit thanks for educating me. Also thanks for backing me up. I appreciate it.

 

[nicalandia]

Didn’t know the last bit thanks for educating me. Also thanks for backing me up. I appreciate it.

I made an edit on that part to reflect clear yelllow/white shanks instead of just skin

 

[Amer]

That is correct.

Ive been mentioning this for many years now, While FM is an Autosomal gene(not sex linked) it depends on the sex linked id+ gene to fully express, that means that a Fm/Fm id+/id+ rooster(Silkie, Cemani etc) is crossed with a hen that has clear yellow or clear white shanks the result will be that both progeny will be Fm/fm+, but only the females will be id+/-(from silkie or cemani sire) so only the females from such cross will have black skin... The males from such cross will be Fm/fm+ Id/id+ so they will have clear white skin.

If the cross has clear yellow/white shanks rooster over a cemani or silkie hen all of the progeny will have clear white skin

I had no idea. But isn't FM dominant? So would the skin remain dark even though the shanks changed colors?
Also, I am quite confused about my chick. This is a blue Wyandotte rooster and a black d'Anvers pullet. This cross should produce white legged chicks.
However, even as a young bird, this chick has black spotting on its legs. I know black Wyandotte hens develop spotting on their legs as they get older. This is because of the extended black gene.
Does this generous spotting on her legs have to do with the combination of extended black, the dermal melanin gene, and what are likely extra melanisers from d'Anvers?
(Sorry about all the questions. I didn't know all this about the fibromelanism gene.)

 

[nicalandia]

I had no idea. But isn't FM dominant? So would the skin remain dark even though the shanks changed colors?
Also, I am quite confused about my chick. This is a blue Wyandotte rooster and a black d'Anvers pullet. This cross should produce white legged chicks.
However, even as a young bird, this chick has black spotting on its legs. I know black Wyandotte hens develop spotting on their legs as they get older. This is because of the extended black gene.
Does this generous spotting on her legs have to do with the combination of extended black, the dermal melanin gene, and what are likely extra melanisers from d'Anvers?
(Sorry about all the questions. I didn't know all this about the fibromelanism gene.)

The dominant Sex-Linked Dermal Inhibitor(Id) will inhibit any expression of melanin on the birds Skin and Shanks.

In Extended Black birds the melanin will also permeate on the epidermis layer of the shank skin.(where Id has not effect since it only affects the dermis and connective tissues)

 

[Amer]

The dominant Sex-Linked Dermal Inhibitor(Id) will inhibit any expression of melanin on the birds Skin and Shanks.

In Extended Black birds the melanin will also permeate on the epidermis layer of the shank skin.(where Id has not effect since it only affects the dermis and connective tissues)

Ok, thanks.

 

[Brahma Chicken5000]

So...how’s it coming along?

 

[Repticake]

Did this ever get anywhere?