I'm the worst person at genetics... help! (212 views)

[deebee]

I'm hoping somebody here can help me. Years and years of breeding and I'll always need help when it comes to how mutations work 

As you've probably seen from my thread about assist feeding the cockatiel chicks, I have two babies! Lutino babies... which I didn't expect... 

My hen bird is straight up cinnamon and my cock bird is a cinnamon pearl pied

When going on various genetic calculators and such, I was told to expect this in terms of offspring;

All cock birds would be cinnamon split to pearl and pied 

All hen birds would be cinnamon pearl split to pied

Have I still got you with me at this point?

They produced Lucifer, a lovely cinnamon cock, earlier this year. True to the gen calc, I was expecting this! 

This is the part where I'm confused...

The pair have now got to lutino chicks... Have I still got you? As I didn't interfere much when they hatched out, their eyes looked plum in the dark nest box so yet again I was expecting cinnamon. HOW ON EARTH DO I GET LUTINO!?

After mooching about a bit on the net, I found out that if a cock bird is SPLIT to lutino then he will produce lutino chicks that are FEMALE! only. I know nothing of either parents backgrounds. Cinna was given to me with butchered wings as a young bird that somebody rescued and Ziggy came from somebody who no longer wanted him or his brother. I couldn't tell you their genetic make up

After finding this information, I changed the gen calcs to a cinnamon hen with no splits and a cinnamon pearl pied cock split to lutino. The results were now this;

Males would be 50% cinnamon split to lutino pearl pied and 50% cinnamon split to pearl pied

Females would be 50% lutino cinnamon pearl split to pied and 50% cinnamon pearl split pied 

I'm trying to get my head around the females having the XY chromosomes and the cocks having the XX. So the cock giving the hen an X makes the split appear? 

The confusion here is unreal! If he is split to lutino (which he absolutely has to be) then these babies are lutino cinnamon pearl hens? They definitely have the pearl markings coming through already but I've never seen a lutino cinnamon pearl. Lutino pearls yes, but with the cinnamon, nope. If you have a photo of what I'm expecting them to look like that would be great. I keep getting the lutino pearls come up and the lutino cinnamons but nothing with all three! 

Help me get my head around this 

[Haimovfids]

Yes. The dad has to be split to lutino and all lutino chicks will be girls. When you have cinnamon in a lutino, they have a washed brown tint on either the backs or wings. There's no telling. Here's a picture I found off google of a cinnamon pearl lutino. You might get more cinnamon then this.



Here is an article explaining the whole X's and Y's. www.littlefeatheredbuddies.com/info/breed-sexlinked.html

If you have anymore questions, feel free to ask!

[deebee]

Thank you for the help!

So I should notice the light brown wash in the flights and potentially the tail too? From what I was reading there was evidence in the tails but I could barely see it myself. Once they feather up I'm sure I'll see it. I didn't even know cinnamon could go with lutino haha

The link you sent me was FANTASTIC! Like it explained it so much easier than everything else I've read and the punnet charts really helped. Thanks so much for that. I get it now. I've favourited it in case I forget haha. It's amazing that I didn't even know he was carrying the gene until he was proven out. So does this mean that Lucifer is also split to ino as well as pearl and pied?