sexual

Biology

Study provides molecular insight into sexual dimorphism in chicken feathers

Ovarian-derived estrogen converts default (primitive) male-type feathers into female-type feathers by regulating hormonal systems within the feather follicle. Provided by: Professor Sakae Takeuchi, Okayama University Birds have unique skin appendages called feathers that are derived from the outermost layer of skin cells. Feathers are important for several functions, including flight, temperature regulation, protection from external stimuli, and mating behavior. The…