Just trying to understand how genetics works with sex - linked varieties and got this below doubt while reading an article on genetics.

 

What will be the outcome of pairing 2 sex - linked varieties, say for example - opaline cock x cinnamon hen.

 

Per my understanding outcome is as below, notation used for representing opaline gene is X^o and for cinnamon X^c...not sure what is the standard notation to represent them and also hope we should have two same sex - linked genes to get that sex-linked variety (for example, 2 opaline genes resulting in an opaline offspring).

 

X^oX^o x X^cY

 

Resulting offsprings = X^oX^c, X^oY

 

I am not sure whether cinnamon gene or opaline gene is dominant or both genes are co-dominant.

 

Just trying to understand what is the order of dominant genes in sex- linked variety, that is which sex - linked variety gene is more dominant and least dominant one.

 

Thanks for your help as always. :sad:

Edited April 20, 200817 yr by Karthik

The fact that we can have a Opaline Cinnamon hen when she only has one X chromosome is due to what they call "crossover". At the appropriate point in meiosis, the two sex chromosomes have exchanged genes, and one such sex chromosome has received both an opaline and a cinnamon gene.

The result, a cinnamon-opaline hen

One is not dominant over the other it is a random mix of chance.

 

Opaline cock x Normal cinn hen

Normal/Opaline cinn cocks

Opaline hens

Weather the cock is split cinnamon changes the outcome.

 

They believe that crossover happens at a average of 32%

Edited April 20, 200817 yr by throwback

Opaline Cock to a Cinnamon Hen will give all Opaline Hens. and Cocks that will be split Opaline and Cinnamon.

Thanks Throwback and Daz. :budgiedance:

 

So resulting offspring cocks will be looking normal, but split to opaline or cinnamon, is my understanding is correct or something I am getting it totally wrong.

is that is correct..

I have an opaline cinnamon hen, they are very pretty.

 

Here she is:

Edited April 27, 200817 yr by melbournebudgies

Thanks for your very cute photo and I like that colour.

 

So what will be the genes available in opaline cinnamon variety......is it X^oX^c.

MB are you sure that that bird hasn’t got red eyes, looks a bit like an Green Opaline Fallow to me?