Genetic Inheritance Puzzles

[nev90]

Here are a couple of genetic puzzles to solve. If there is enough interest I'll post some more

Question 1/ If you were colony breeding and there was a sky blue cock, a dark green cock and a lutino cock in the aviary when a cobalt hen produced a female mauve chick, which cock was the father of the chick?

Question 2/ A light green opaline male chick was born in an aviary containing: An opaline sky blue cock, Greywing dark green cock, a Dilute cobalt cock, an opaline olive cock; a normal light green hen, an opaline mauve hen, an opaline cobalt hen & a greywing light green hen: Who were the chick's parents?

[barrieshutt]

My heads spinning just reading it Nev

[stace]

Might be way off here, but I think I remember Neville answering someone's question about a violet chick ages ago. Was it that only the green birds can mask the violet gene? If so, I'd guess the dark green cock.

[Ryan.W]

Jan 22, 2012 7:38:44 GMT nev90 said:

Here are a couple of genetic puzzles to solve. If there is enough interest I'll post some more

Question 1/ If you were colony breeding and there was a sky blue cock, a dark green cock and a lutino cock in the aviary when a cobalt hen produced a female mauve chick, which cock was the father of the chick?

Question 2/ A light green opaline male chick was born in an aviary containing: An opaline sky blue cock, Greywing dark green cock, a Dilute cobalt cock, an opaline olive cock; a normal light green hen, an opaline mauve hen, an opaline cobalt hen & a greywing light green hen: Who were the chick's parents?

iv'e underlined what i think is the answers .

[rachel]

1) dark green cock
2) Greywing dark green cock-opaline cobalt hen

[nev90]

I'll post the answers and the reasoning behind them on Wednesday

Jan 22, 2012 8:04:45 GMT barrieshutt said:

My heads spinning just reading it Nev

I thought you would find it very obvious Barrie

Jan 22, 2012 11:23:46 GMT stace said:

Might be way off here, but I think I remember Neville answering someone's question about a violet chick ages ago. Was it that only the green birds can mask the violet gene?

I don't think that's quite what I said, Stace. Anyway the chick in question one is mauve not violet

[albino]

With regard to Question 1 the Dark Green cock must also have been split for Blue.

albino.

[nev90]

Jan 22, 2012 14:59:05 GMT rachel said:

1) dark green cock
2) Greywing dark green cock-opaline cobalt hen

Rachel got them both right

Jan 22, 2012 7:38:44 GMT nev90 said:

Question 1/ If you were colony breeding and there was a sky blue cock, a dark green cock and a lutino cock in the aviary when a cobalt hen produced a female mauve chick, which cock was the father of the chick?

The father is the dark green cock.
You can eliminate the sky blue cock because he has no dark factor and the chick has a dark factor of 2. The lutino can also be eliminated because the chick is female and all a lutino males daughters would be inos. That leaves the dark green cock (It also proves that he is split for blue). A cobalt mated to a dark green that is split for blue would be expected to produce about 12.5% mauve chicks.

Question 2/ A light green opaline male chick was born in an aviary containing: An opaline sky blue cock, Greywing dark green cock, a Dilute cobalt cock, an opaline olive cock; a normal light green hen, an opaline mauve hen, an opaline cobalt hen & a greywing light green hen: Who were the chick's parents?

The parents are the greywing dark green cock & the opaline cobalt hen.
The mother of an opaline male chick must be opaline. There are two opaline hens but the mauve has 2 dark factors and the chick has none so the mother must be the opaline cobalt hen. Since the chick is green and the mother is blue the father must be green series. The opaline olive can't be the father because he has 2 dark factors so the father must be the greywing dark green. This also proves that the greywing dark green cock is split for opaline

0 dark factors appear as sky blue or light green
1 dark factor appears as cobalt or dark green
2 dark factors appear as mauve or olive

If you pair two birds with 0 dark factors together the chicks will also have 0 dark factors. It doesn’t matter whether they are both sky blues or both light greens or one of each

If two birds with 1 dark factor are paired together the result will be 50% 1 dark factor, 25% 0 dark factor and 25% 2 dark factors

If two birds with 2 dark factors are paired together all the chicks will also have 2 dark factors

If a 0 dark factor bird is mated to a 1 dark factor bird the result will be 50% with 0 dark factors, 50% with 1 dark factor

If a 1 dark factor bird is mated to a 2 dark factor bird the result will be 50% 1 dark factor, 50% 2 dark factors

If a 0 dark factor bird is mated to a 2 dark factor bird the result will be 100% 1 dark factor chicks

[BudgiesBuddy]

Excellent thread Nev. Waiting for next questions

[tariq]

Thanks Nev.
Can you please add thes assumptions with Grey factor as well? As I am confused with Grey factor.