Temperature and eggs

[Wild-Woman]

I hope doesn't sound daft but I was wondering whether the temperature that eggs are kept at in the nest effects the sex of the chicks..a bit like some reptiles.Or does nature try to keep it balanced? ww

[paulthomas]

I don't think it does. I'm pretty sure that birds have a sex chromosome.

[MalcolmX]

definitely does not affect sex chromosomes only for that

[Grantus]

I found this quote for you:

"Birds are different in that their male and female sex-chromosome roles are reversed from mammals, meaning that the female is heterozygous and the male is homozygous. Also, in birds we use Z and W instead of X and Y. (These letters refer to the general shapes of the chromosomes.) So, a male bird is ZZ, and a female bird is ZW. This leads us to the topic of sex-linked traits. "

Old World Aviaries
A brief review of avian genetics
by Darrel K. Styles, DVM

http://www.oldworldaviaries.com/text.../genetics.html

[MalcolmX]

Originally Posted by Grantus

I found this quote for you:

"Birds are different in that their male and female sex-chromosome roles are reversed from mammals, meaning that the female is heterozygous and the male is homozygous. Also, in birds we use Z and W instead of X and Y. (These letters refer to the general shapes of the chromosomes.) So, a male bird is ZZ, and a female bird is ZW. This leads us to the topic of sex-linked traits. "

Old World Aviaries
A brief review of avian genetics
by Darrel K. Styles, DVM

http://www.oldworldaviaries.com/text.../genetics.html

does this have any bearing on the inability to get cross breeding between species .in my collection the manadines cannot cross breed with the carolinas?