Ok so Im writing a research paper on Gregor Mendel and his contribution to genetics. I am bringing in chicken breeding but I would like to know these questions to help finish up my paper. What is the roosters contribution to the offspring What is the hens? I know there are dominate and recessive colors such as a barred roo will make all barred babies vice versa. Can someone explain the whole shabang to me? Thank you soo much!