Imprinting disordersPrader-Willi syndromeAngelman syndromeBeckwith-Wiedemann syndromeSilver-Russell syndrome Chinese scientists created mice with 2 dads — and they survived to adulthoodBy modifying 20 regions of the genome, scientists successfully bred mice with two male parents and raised them to maturity.https://www.livescience.com/health/fertility-pregnancy-birth/chinese-scientists-created-mice-with-2-dads-and-they-survived-to-adulthood