我们的性别是由X、Y染色体决定的。一般来讲,女性拥有2条X染色体,男性拥有1条X染色体和1条Y染色体。但是,男性约有1/500的概率获得额外的1条性染色体,而拥有3条性染色体的男性将很可能无法产生成熟的精子,导致不育。一项于2017年8月17日发表在Science上的研究显示,来自英国和日本的研究人员已经找到了去除多余染色体,并繁育健康后代的方法。研究人员首先从患有性染色体三体综合征的小鼠(XXY型与XYY型)身上取一小块耳部组 Our gender is determined by the X and Y chromosomes. In general, women have two X chromosomes and one X chromosome and one Y chromosome. However, about 1 in 500 men get an additional 1 sex chromosome, while men with 3 sex chromosomes will most likely not be able to produce mature sperm, leading to infertility. A study published in Science on August 17, 2017 showed that researchers from Britain and Japan have found ways to remove excess chromosomes and breed healthy offspring. Researchers first took a small group of ears from mice with genital trisomy (type XXY and type XYY)