“…Determining fetal sex using sex‐specific DNA sequences in maternal serum by PCR is successfully performed in species with varied types of placentation and hence different degrees of maternal fetal contact—including horses (de Leon et al, ; Kadivar et al, ), cattle (da Cruz et al, ; Davoudi et al, ; Lemos et al, ; Wang et al, ), sheep (Asadpour, Asadi, Jafari‐Joozani, & Hamidian, ; Kadivar et al, ), humans (Lo et al, ), and primates (Jimenez & Tarantal, ; Yasmin, Takano, Nagai, Otsuki, & Sandai, ). SRY (Sex‐determining region Y) is the most commonly used gene for sex typing in mammals, particularly when an internal control is included to detect a gene present on the X chromosome as validation of the amplification process.…”