sex determination on a cell by cell basis in chickens

The link below is to a great summary of some brand-spanking new research into sex determination in chickens.

The sex determination system in birds is quite different in birds than mammals - so different that it is not unheard of to have a half-male, half-female bird. Using this unique phenomenon researchers have been able to study the fundamentals of sex determination in the chicken.

Every cell in a chicken has its own male or female identity. Neato!