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当我们在克隆的伦理问题上争论不休时，我们是否思考过它在科学上的问题？是否想过它与自然进化之间的冲突？ 今年2月14日，世界上第一只用成年动物体细胞克隆而成的动物——年仅6岁的绵羊“多莉”的死亡再次引起人们对克隆技术的强烈关注。 一只正常的绵羊的寿命是1
When we debated on the ethical issues of cloning, did we think about its scientific problems? Have you ever thought about the conflict between it and natural evolution? On February 14 this year, the death of Dolly, the first animal in the world to be cloned from an adult animal’s somatic cell, the 6-year-old sheep, once again caused people to pay close attention to cloning technology. The lifespan of a normal sheep is 1