This one cell, this one fertilized cell which is unique because it's the - its chromosome contains the combination of the sperm and the egg, develops into an embryo and then on birth develops into a human.

这个受精卵,是独一无二的,因为它的染色体,包含了精子和卵子的组合,并由此发育成为一个胚胎,之后形成一个人类个体

耶鲁公开课 - 生物医学工程探索课程节选

In this case, if everything goes right, you inject the DNA into the pronucleus, you implant this fertilized egg into a foster mother, the mother gives birth to offspring, it develops and when it develops this foreign DNA is in the offspring.

如此一来,如果一切顺利,DNA成功注射进原核,受精卵成功植入代孕母亲,成功的孕育了后代,后代健健康康的长大,目的基因就成功的整合进了后代的基因组

耶鲁公开课 - 生物医学工程探索课程节选