The mammalian Y chromosome encodes a specialized set of genes that are essential for male viability and fertility. In particular, the sex-determining region Y (SRY) protein is necessary to initiate male sex determination.  However, a new study from researchers at the University of Hawai’i and INSERM has shown that live mouse progeny can be generated with assisted reproduction using germ cells from males which do … Continue reading Male mice without any Y chromosome produce offspring with assisted reproduction.