人类的自然生殖过程是通过性交,精子和卵子在输卵管结合、受精卵植入子宫,并在子宫内生长发育等步骤完成的。所谓生殖新技术就是代替上述自然过程中某一步骤或全部步骤的手段。这种基本手段有三种,即人工授精、体外受精和无性繁殖。什么是人工授精呢?就是不通过性交把精液注入女性生殖器内,达到授精的目的。这种技术又分为同源人工授精和异源人工授 Human natural reproductive process is through sexual intercourse, sperm and egg in the fallopian tubes, fertilized eggs into the uterus, and in the womb growth and development and other steps. The so-called new reproductive technology is to replace one or all of the above steps in the natural process means. There are three basic ways to do this: artificial insemination, in vitro fertilization, and asexual reproduction. What is artificial insemination? It is not through sexual intercourse into the female genital within the semen, to achieve the purpose of insemination. This technology is divided into homologous artificial insemination and heterologous artificial teaching