Question about cockatiel genetics/colors
Posted 02 December 2010 - 09:52 AM
Pearl is one of the sex-linked mutations, so if both parents are normal greys and a chick is pearl, then the chick is a female, and any male offspring could potentially carry the pearl mutation as a split. In theory, 25% of chicks (50% of females) would be pearls, and 25% would be split (50% of males). Does that make sense?
Posted 28 December 2010 - 08:29 PM
here let me try explaining what monica said it bit more clearly.
cause she has it pin point on.
i had a pearl male,
and a whiteface pied female
the ofspring was usally 3 pearls one grey.
since every mutaion orignates from the wild outlook we call "grey"
2 female pearls one male pearl, and then the grey was usally a male.
(but iv had diffrent male to female ratios all the time.)
that male was split whiteface and pied. (because of mommy)
the pearl males would split wf as well.
so yea ofcoarse your greys can though some crazy mutions off.
just verys who mommy and daddy is, maybe you can be lucky and he can split lutino.
but i dont think you can get "albinos" with greys, i thought you had to have bolth parents containing whiteface genes
and the male has to split lutino??
Posted 29 December 2010 - 03:29 AM
Using this genetic calculator
Genetic Calculator 1.3 Cockatiels
Not including all the possible splits, here's the results. Males are 1.0 and females are 0.1.
1.0 natural /ino blue(whiteface) x 0.1 natural /blue(whiteface)
% from all 1.0
25.0% 1.0 natural blue(whiteface)
75.0% 1.0 natural
% from all 0.1
12.5% 0.1 ino blue(whiteface)
37.5% 0.1 ino
12.5% 0.1 natural blue(whiteface)
37.5% 0.1 natural
What this basically translates out to, is that if you breed a grey male split whiteface (aka blue) and lutino (aka ino) to a grey female split whiteface, then 25% of the male offspring will be whitefaces, 75% will be normal greys. When it comes to the hens, we'll get 12.5% albinos, 37.5% lutinos, 12.5% whitefaces, and 37.5% normal greys. --- It's a bit messier than that, when you include the splits, so I kept it simple.
Whiteface is a recessive mutation, meaning that if the parents carry 1 gene, then they are splits. If they carry 2 genes, they are visual.
As you know, Ino is a sex-linked gene, and if hens carry one gene they are automatically visual (since it is impossible for hens to carry 2 genes due to the "Y" chromosome). If males carry one gene, they are split, if they carry two, they are visual (due to the "XX" chromosomes).
This website isn't too bad about explaining genetics.
Beginner Guide to Genes, Mutations and Hybrids
Posted 29 December 2010 - 04:43 PM
i was always told you CANT calculate genitics just because its proper thorey. out of all people i tought you would know that.
i bread them a total of 5 times in 3 years. any every time i had one male pearl, EVERYTIME
ofcoarse the more fems but i always got a male, and the pied one was always male
and i kept one of the babies, the pearl male, bread him last year, and got a 2 wf pieds and 1 grey.
male pearl paired up with a light pied hen. chachi (the male tiel) carried caspers genes (mommy wf pied)
and the albinos from greys thing, WOW i never knew that. i was always told to get whiteface lutinos
they HAD TO HAVE 2 wf parent and the father HAS to split lutino.
i know you can get clear pieds from 2 greys, but no red eyes
Posted 29 December 2010 - 05:47 PM
Your hen must have been a pearl pied whiteface - otherwise you couldn't have gotten any pearl males - but you did not mention that the hen was a pearl.
You *can* calculate genetics, assuming you know all the mutations the parents are visual and split for - and the result of said calculations are just that - a calculation aka a guess of *potential* offspring. In theory does not always calculate out to in practice, as the two are most often different.
Posted 10 January 2011 - 11:28 PM
Here was just as their feathers were starting to come in..
Watson & Petrie (R.I.P)
Pan (R.I.P) & Chiquita
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