澳大利亚国立大学生物化学系里德博士及其领导的科研小组应用遗传工程技术,对奶牛胚胎进行了长期的研究和实验,发明了一种选择小牛性别的方法。这种新方法是分离胚胎中脱氧核糖核酸基因排列顺序,这种基因只有在牛羊的Y(雄性)染色体中才能 Dr. Reid, from the Department of Biochemistry, Australian National University, and his research team used genetic engineering techniques to conduct long-term research and experiments on dairy cow embryos and invented a method to select calves’ sex. The new method is to isolate the DNA sequence in embryos, which is only found in the Y (male) chromosomes of cattle and sheep