FINCHforum

Hi,

What will be the result of pairing a Cremino male Grass finch and a cinnamon female:
Will they be all female creminos and normal males, or is there a chance of getting cinnamon males, cinnamon females and cremino males??

Also what will be the result if we pair a normal male split cremino and a cinnamon female???

A friend of mine has setup a pair of cremino male and cinnamon female. and he claims that some of the creminos he got from this pair are males. so it is very confusing,

As creminos are actually cinnamon and ino is there a chance of it crossing over and producing cremino males and cinnamon males???

thanks in advance:

Neeraj

Hi,

Could somebody reply to my question??

Please???

Neeraj

Oi, that was a bit confusing to read but I'll give it a go...

We use different terms for colors here in the US so I may not be correct on all of these. cindy could probably give this a go...

Creamino is a sex-linked recessive gene. So a male needs to copies of the gene in order to express the Creamino color, while a hen only needs one copy of the gene in order to express the Creamino color.

Cinnamon is used in some regions to describe what we call Fawn here in the states. Although it is possible that the mutation could be what we call Isabelle, although I doubt it. Most of the time I've seen Cinnamon refer to Fawn. There is of course normal and Albino mutations of the Shaft-tail as well.

Now a Creamino male x Cinnamon (Fawn) hen I believe will produce Creamino hens and visually Normal males and females that are both split to Fawn. Fawn is a recessive trait so the bird needs to copies of the gene in order to appear Fawn or Cinnamon.

So...

25% female Creamino
50% male Normal (visual) split to both Fawn and Creamino
25% female Normal (visual) split to Fawn

Since a hen can't be split to Creamino as she only needs one gene.

A Normal/Creamino male x Fawn (Cinnamon) hen would produce

12.5% male Normal (visual) split to Creamino
12.5% male Normal (visual) split to Fawn
50% female Normal (visual) split to Fawn
25% female Creamino

Those percentages may not be exact but that should be about right I think. Sheather is good with genetics and biology. Perhaps he can whip up a Punnet square... ;)

And perhaps I can type the word "two" correctly. It's what I get for working on anything genetic after 1:00 am...

Was that the answer you were looking for NRJ ?

Thanks Colt,

But i ma confused so there is no chance of producing male creminos from this pair, so how did my friend end up with males, i will see his birds personally and look further into it.

So could it be an Isabelle ino, would that make any difference, Also can you post a picture of an albino Shaft tail, i have never seen one yet, mostly creminos.

thanks

Neeraj

Sorry just wanted to add.

Doesn't the cremino male already have the cinnamon gene in him so wouldn't that produce cinnamon males and females as he is already paired to a cinnamon females!! if it is a recessive trait, as both parents will carry it???

Sorry if it sounds unclear??

thanks

Neeraj

cindy Are you any good with Shaft-tail genetics?

@NRJ here is a friends website. You can see a few pictures of her birds as well as a page on genetics...

http://happybirdplace.weebly.com/specie ... ation.html

http://happybirdplace.weebly.com/avian- ... s-101.html