sex-linked traits

[TimG]

I found this on the web:

When you breed chickens, the male chicks ALWAYS receive their genetic information found in the breeder hen's chromosomes. However, female chicks can't acquire traits from the breeder hen.

Therefore, remember that when a hen with certain special characteristics is bred with a rooster without it, all the male chicks will receive it but not the females. Pullets usually are just like their father, while all males end up just like their mother.

While the quote is unclear, the article refers to these "special characteristics" as sex-linked traits. Some examples given: nakedness, barring, silver color, and albinism. I also think that some feather development is sex-linked.

Are there other characteristics that are sex-linked?

As an example, let's consider the Black Sex-link resulting from a Rhode Island Red father and Barred Rock mother. The result is a pullet that is black with some red in the neck and a cockerel that looks like a barred rock with a few red feathers. So, these males are not "just like their mothers" but pretty close.

The reverse mating, a Barred Bock father and a Rhode Island mother will not produce the reverse offspring (males black with red necks; females that look like barred rocks), will it?

A little primer for me or a pointer to where I could find a bit more than the very basics online would be appreciated.

Thanks.​

 

[speckledhen]

Tim Adkerson (tadkerson on BYC) is currently writing a genetics book. He had a fabulous website on genetics then the server dumped the entire thing and he had to start over. I dont think he has it up and running with all that great information yet or I'd send you there.
This link gives you several sites on chicken genetics to peruse:

http://www.ithaca.edu/staff/jhenderson/chooks/chlinks.html#gen

 

[Krys109uk]

A little primer for me or a pointer to where I could find a bit more than the very basics online would be appreciated.

http://www.edelras.nl/chickengenetics/default.html

And Henk's Chicken Calculator is a very useful tool.

http://home.hetnet.nl/~h.meijers69/overzicht.htm#kipcalculator​

 

[deerman]

Easy to remember in birds. Males carry 2 sex chromosome, females only have one.

So only the males can carry any hidden. If a females has a recessive color it will show.

Like the color purple in peafowl, that color is carry on the sex chromosome.

If a peahen is purple, then will show the color. Peacock can be blue and carry the purple hidden on the 2nd sex chromosome.

Blue peacock spilt purple X blue peahen = all blue looking peacocks, and peahens blue and purple peahens.

Purple peacock X blue peahen = all purple peahens and all blue looking peacocks split purple.


The sex link only work on those thing carry on the sex chromosome.

Easy with peafowl because only 3 colors, little harder more thing carry on them in chickens even slow feathering.

 

[Henk69]

Try this one also:
http://home.hetnet.nl/~h.meijers69/kruisMatrix.html

There are 2 buttons of interest:
"sexlink cross" and "reverse sexlink cross"

(The punnett square only shows unique gametes)