http://www.kirstenmunson.com/cockatiels/green.html#pfwf

 

That refers to cockatiels.. but I found the Sex-linked part pretty interesting. It seems to me like it would also apply to budgies. What it's saying - just an example off the top of my head (using budgies) Say a pair was a lutino father and a green cinnamon opaline mother.

 

Males would be split to X1 lutino (from dad) and X2 Cinnamon Opaline (from mom)

 

So if you eventually breed one of those males - female babies would be either lutino OR cinnamon opaline -- you couldn't get cinnamon lutino, just opaline, just cinnamon. Cinnamon and Opaline were inherited together on the same X chromosome so they will be passed down together. It goes on to say that crossovers (if cinnamon were to "jump" over to X1 then you could get lacewings and just opaline) do sometimes occur. The whole clutch may not be affected if a crossover occurs.. it could only be one bird.

 

I haven't found anything to say for sure that it works this way with budgies to.. so I'd be interested to know.

Edited November 26, 200618 yr by HurdyBirdy

thank-you so much for this info, i have added it to my favorites

Sex linked genetics in Budgies require the cocks to have two x chromosones both with the sex linked gene to be that visual variety. The female only needs one.

 

Cock = xx

Hen = xy

 

If the cock was an opaline Xop Xop he would show opaline.

If the hen was an opaline Xop Y she would show opaline.

 

If an Opaline Cock mated with the Normal hen the out come would be

 

Xop Xop x XY = Xop X + Xop Y + Xop X + Xop Y

 

Xop Y is an Opaline Hen

Xop X is a Normal Cock split to Opaline

 

So a sex linked Cock to a normal hen is 50% Split Cock and 50% Opaline Hens.

 

An Opaline Cinnamon Cock to a Normal Hen

 

Xopcin Xopcin x XY = Xopcin X + Xopcin Y + Xopcin X + Xopcin Y

 

50% will be Opaline Cinamon Hens and 50% will be Normal cock split to opaline.

 

Lets look at your eg. lutino cock and a opaline cinnamon green hen

 

Xino Xino x Xopcin Y = Xino Xopcin + Xino Y + Xino Xopcin + Xino Y

 

Xino Y = Lutino Hen

Xino Xopcin = Normal Cocks split to Lutino Split to Opaline split to Cinnamon

 

Bred the hen to a cock chick and you would get.

Xino Y x Xino Xopcin = Xino Xino + Xino Xopcin + Xino Y + Xopcin Y

 

Xino Xino = Lutino Cocks

Xino Xopcin = Normal Cocks split to Lutino Split to Opaline split to Cinnamon

Xino Y = Lutino Hens

Xopcin Y = Opaline Cinnamon Hens

Edited November 26, 200618 yr by daz