Kraay G J, Menard D P, Bedoya M
Can Vet J. 1983 Sep;24(9):281-3.
A single embryo obtained from a superovulated Holstein-Friesian cow resulted in female twins following transfer.Blood typing studies including 17 genetic systems showed that the twins had identical genotypes. The probability that dizygous female twins from the same parents have identical blood types by chance was calculated as 1.34 x 10(-7).
从一只经超数排卵处理的荷斯坦 - 弗里生奶牛获得的单个胚胎移植后产下了雌性双胞胎。包括17个遗传系统的血型研究表明,这对双胞胎具有相同的基因型。来自同一对父母的异卵雌性双胞胎偶然具有相同血型的概率经计算为1.34×10⁻⁷。