Yu Yang, Shengqiang Ye, Lixia Wang, Xing Chen, Yunguo Qian and Ping Gong, 2022. DMRT1 Expression is Positively Correlated with the Development of Testes in Adult Mule Duck. Pakistan J. Zool., 54: 439-442. DOI: https://dx.doi.org/10.17582/journal.pjz/20200509030529