Black Orpington (split for mottled) Rooster x Chocolate Mottled Hen

[Jbowman8716]

So I’m pretty new to the genetics game. Prior to now, I’ve just bred your standard birds such as RIR, Barred Rock ect.

I recently purchased a Black Split Orpington rooster. He is split for the mottled gene and a Chocolate Mottled hen.

So what I’m trying to figure out is what colors are going to be produced from this crossing? I know that I’ll have 50% of chicks end up mottled but curious if the chocolate gene is still sex linked when crosses with a black rooster.

I really hope that makes sense!

 

[The Moonshiner]

Correct that it'll be 50/50 with mottled/non mottled and of course the non mottled will be split for mottling.
Chocolate is sex linked and is always sex linked.
Since your rooster isn't chocolate or carrying chocolate none of the pullets will be or get a chocolate gene.
The chocolate hen will pass her chocolate gene to her cockerel offspring. Since they will only have one gene for it it won't be expresses but they will all be split for it.

 

[Jbowman8716]

Thank you for your reply.

Let me ask this. If I breed first generation cockerel back to the chocolate hen, do I then run the chance of a chocolate mottled? Since some of the cockerels will have the recessive c gene? Also, if that’s the case, would the third generation then produce sex link due to CxC ?

Just making sure I understand how this works so I can try not to screw up

 

[The Moonshiner]

All the F1 cockerels will carry one chocolate gene. There for they have a 50% chance of passing it on to their offspring. The hen only has one slot for that gene and it chocolate so she will pass it on to all male offspring but not to the female offspring. About half of all offspring will be chocolate from that hen and an F1 cockerel.
If the F1 cockerel you use is mottled then all chicks will have mottling. So thats a 50% of chocolate mottled chicks.
3rd generation wouldn't produce sex links if both sides are chocolate. They would breed true to chocolate.
To use chocolate to produce sex links you need a chocolate rooster over black hens. That breeding will produce chocolate pullets and black split cockerels.

 

[Jbowman8716]

Thank you so much! I appreciate all your help and information!