The testis determinant factor Sry and the spermatogonial proliferation factor Eif2s3y genes of Y-chromosome play role in sex determination and performing first stage of spermatogenesis respectively.
Paper:
http://www.sciencemag.org/content/early/2013/11/20/science.1242544
Tags: Sry, Eif2s3y, Y chomosome, mice, genetics, male fertilisation, spermatogenesis