Color genetics thread.

[morbius18]

I crossed a Golden cuckoo marans to a buff orpington. The resulting offspring have brown feathering on the back half. Where did the brown coloration come from?
Rooster:

Hen:

F1 hen:

F1 cockerel:

F1 pullet:

I think that the buff orpington is E^wh based, while my Golden cuckoo is ER based. If so, then from the F2s should I have some pure wheaten based birds? And how does the brown coloration come into play on the back half of the birds?

 

[draye]

https://www.backyardchickens.com/content/type/61/id/7388123/

I don't know he answer to that one, but I think that us one beautiful hen.

 

[Wappoke]

I crossed a Golden cuckoo marans to a buff orpington. The resulting offspring have brown feathering on the back half. Where did the brown coloration come from?
Rooster:


Hen:


F1 hen:


F1 cockerel:


F1 pullet:



I think that the buff orpington is E^wh based, while my Golden cuckoo is ER based. If so, then from the F2s should I have some pure wheaten based birds? And how does the brown coloration come into play on the back half of the birds?

The coloration found in your F1 birds is due to them being heterozygous (split) for two restrictors, columbian and dark brown. I agree with you that the marans is birchen at the E locus and the orpington is most likely light wheaten but they can carry the wild type allele also. This would make the F1 birchen/wheaten heterozygotes. The birchen allele is causing the black pigments in the plumage. The wheaten allele produces very little black pigment in the plumage of a female chicken. I do not see any barring in the tail of the pullet- this would indicate you marans is carrying only one barring gene.

 

[morbius18]

When the male is crossed with black copper marans or other golden cuckoos, 100% of the offspring are barred. I'm 100% sure he is double barred.

Rooster:

His single barred Golden cuckoo marans son:

His single barred golden cuckoo olive egger son:

So, he should have 2 barring genes. The rest of the explanation makes sense though.

 

[morbius18]

A few more recent pics of the pullet in question. She appears to have light barring on the tail.

 

[AmandaMBG]

I am wondering what color varieties are possible with certain Roo and pullet mixes. Specifically

Dominque x with non barred (Will all chicks be barred?)
Black Austrolorp x with various pullets (Will they all be black?)

 

[Wappoke]

I thought you were posting concerning the hen.

 

[Wappoke]

I am wondering what color varieties are possible with certain Roo and pullet mixes. Specifically

Dominque x with non barred (Will all chicks be barred?)
Black Austrolorp x with various pullets (Will they all be black?)

barred male x non-barred hen = male contributes one barring gene to all the offspring all will be barred you are corect

black male x barred female = barred males and black females

black male x white female ( dominant white)= all white offspring

black male x white female (recessive white) = black offspring

black male ( carries gold) x buff female ( carries dominant white) = white with buff on anterior end of chicken' amount buff can very

black male ( carries gold) x buff female (no dominant white) = black with buff on anterior end of chicken' amount buff can very

black male ( carries gold ) x other red varieties = basically black with red leaking through black;,

black male ( silver ) x other silver varieties= black leaking silver

black male ( carries silver ) x other red varieties =black leaking silver

black male (carries silver and gold) x other red varieties - black males leaking silver, males black leaking gold, females black leaking silver and some black leaking gold


black male (carries silver and gold) x other silver varieties - black males leaking silver,, females black leaking silver and some black leaking gold

 

[AmandaMBG]

Thank you for the reply. Now just have to figure out the best way to save the info on my phone.

barred male x non-barred hen = male contributes one barring gene to all the offspring   all will be barred you are corect

black male x barred female = barred males and black females

black male x white female ( dominant white)= all white offspring

black male x white female (recessive white) = black offspring

black male ( carries gold) x buff female ( carries dominant white) = white  with buff on anterior end of chicken' amount buff can very

black male ( carries gold) x buff female (no dominant white) = black with  buff on anterior end of chicken' amount buff can very

black male ( carries gold ) x other red varieties = basically black with red leaking through black;, 

[COLOR=333333]black male ( silver ) x other silver varieties= black leaking silver [/COLOR]

black male ( carries silver ) x other red varieties =[COLOR=333333]black leaking silver[/COLOR]

[COLOR=333333]black male (carries silver and gold) x [/COLOR]other red varieties - black males leaking silver, males black leaking gold, females black leaking silver and some black leaking gold


[COLOR=333333]black male (carries silver and gold) x [/COLOR]other silver varieties - black males leaking silver,, females black leaking silver and some black leaking gold

 

[suncatcher]

Any idea what this guy is carrying? He is from Mille Fleur pen.