Dun, Khaki, Platinum?

[EnnieM0097]

my brain is fried, trying to understand these genetics. is this correct? can anyone share photos? I'm breeding specifically with silkies and satins, but any pics help.

dun x dun = 1/4 khaki, 1/4 black, 1/2 dun
dun x blue = 100% platinum

 

[pipdzipdnreadytogo]

You are correct on dun x dun. It behaves like blue x blue in that you get 1/4 black, 1/4 double dose of the gene (khaki from dun or splash from blue), and 1/2 single dose of the gene (dun or blue, respectively).

Dun x blue is different, though. The genes are independent of one another, not allelic. Your offspring have a 50-50 shot of inheriting a dun gene from their dun parent, and independently another 50-50 shot of inheriting a blue gene from their blue parent. Crossing the two together gives you the possibility that they inherit both genes, that they inherit dun and not blue, that they inherit blue and not dun, or that they inherit neither. Each option has equal odds, giving you a 1 in 4 chance for any of those outcomes. So in other words, your offspring from blue x dun should be about 1/4 black, 1/4 blue, 1/4 dun, and 1/4 platinum.

Edited for a typo ​

 

[NatJ]

You are correct on dun x dun. It behaves like blue x blue in that you get 1/4 black, 1/4 double dose of the gene (khaki from dun or splash from blue), and 1/2 single dose of the gene (dun or blue, respectively).

Dun x blue is different, though. The genes are independent of one another, not allelic. Your offspring have a 50-50 shot of inheriting a dun gene from their dun patrent, and independently another 50-50 shot of inheriting a blue gene from their blue parent. Crossing the two together gives you the possibility that they inherit both genes, that they inherit dun and not blue, that they inherit blue and not dun, or that they inherit neither. Each option has equal odds, giving you a 1 in 4 chance for any of those outcomes. So in other words, your offspring from blue x dun should be about 1/4 black, 1/4 blue, 1/4 dun, and 1/4 platinum.

Yes, exactly.

Also, khaki x black = 100% dun

If you want 100% platinum, cross khaki x splash. That way every chick inherits one dun gene from one parent, and one splash gene from the other parent, so they have exactly the right number of each. Or crossing a bird that is splash & khaki (whatever that's called) with a black bird will also give 100% platinum.