For several years, some couples at risk of passing a genetic disease on to their children have used in vitro fertilization, producing several embryos that can be tested for the faulty gene and implanting in the woman’s uterus only those without it. Now couples are using this technique to avoid passing on genes that imply a significantly elevated risk of developing certain forms of cancer.
筛选子女不一定要做人流。数年来，一些可能将遗传病遗传给子女的夫妇采用试管授精的方式生成多个胚胎，检查基因缺陷，然后挑出没有基因缺陷的胚胎植入女性的子宫。现在，有些夫妇已开始使用这种技术避免将某些癌症的高风险基因遗传给子女。