An article by MIT Technology Review describes project «Boys Only,» in which Alison Van Eenennaam of the University of California aims to create a bull that will father only male offspring: either normal bull calves or ones with two X chromosomes but also the male - making SRY.
All on its own, the presence of SRY can make a female turn out to be essentially male — with bigger muscles, a penis, and testicles (although unable to make sperm).