Breeding for Chocolate Splash

[The Moonshiner]

@The Moonshiner
Hey, this post was from last year but I'm dealing something similar-
Would the blue and splash offspring from blue chocolate split over splash be cockerels?
I know all the mauve would be females, but what about the splash and blues? 25% females and 25% males?

No
Since blue isn't sex linked and the rooster is split for chocolate then they'd produce some blue and/or splash pullets.
The rooster would have one chocolate gene and one non- chocolate gene. Any of the female offspring to receive his non- chocolate gene would be blue or splash.

 

[lilwanderer]

No
Since blue isn't sex linked and the rooster is split for chocolate then they'd produce some blue and/or splash pullets.
The rooster would have one chocolate gene and one non- chocolate gene. Any of the female offspring to receive his non- chocolate gene would be blue or splash.

Okay- but the mauves are still pullets right?

 

[The Moonshiner]

Okay- but the mauves are still pullets right?

Correct. All mauve/ splash mauve would be females.

 

[NatJ]

@The Moonshiner
Hey, this post was from last year but I'm dealing something similar-
Would the blue and splash offspring from blue chocolate split over splash be cockerels?
I know all the mauve would be females, but what about the splash and blues? 25% females and 25% males?

If the rooster is blue (one blue gene) and carries chocolate (one chocolate gene, one not-chocolate gene). And if the hen is splash (two blue genes), with no chocolate gene.

The hen gives one blue gene to each chick. The rooster gives a blue gene to some chicks, and a not-blue gene to some other chicks. That would make 50/50 split of blue chicks and splash chicks, if the chocolate gene were not involved.

The hen has no chocolate gene. She gives her not-chocolate gene to every son. Half of the sons inherit chocolate from their father and half do not, but none of them show it.

So half the sons are blue and half are splash. Half of each color carry chocolate, with none showing it.

For the daughters, he mother gives a W chromosome that makes them female but has no effect on their color. Half of them inherit chocolate from their father and half do not. Of the "blue" daughters, half have chocolate (=mauve) and half do not (=blue). Of the "splash" daughters, half have chocolate (not sure what to call that) and half do not (=splash.)

Percents of the total chicks would be:
Male chicks:
12.5% blue carry chocolate
12.5% blue not carry chocolate
12.5% splash carry chocolate
12.5% splash not carry chocolate
Female chicks:
12.5% mauve (blue + chocolate)
12.5% blue (no chocolate)
12.5% splash + chocolate
12.5% splash (no chocolate)

Or if you add up just the visible colors, you get:
37.5% blue (females without chocolate, males carry chocolate, males not-carry chocolate)
12.5% mauve (females)
37.5% splash (females no chocolate, males carry chocolate, males not-carry chocolate)
12.5% splash with chocolate (females)

I think I got all the math right. If anyone spots a mistake, please let me know. I sometimes make mistakes when I try to deal with half of chicks (blue) and half of that (chocolate) and half of that (male/female) and sometimes a different term (mauve)!