俗话说:“种瓜得瓜,种豆得豆。”通俗地讲,牛生出来的只能是小牛而不是小狗,猪生出来的只能是小猪而不是小羊,这是传统的遗传学常识。但是,我们能不能改变这种状况,做到种瓜不得瓜,种豆不得豆,而是按照人的意志,得到更想要的东西呢?比如,培养浑身长满卷曲羊毛的牛,天鹅那么大的鸭子,会游泳的鸡,以及根部长满白薯的小麦,枝头上结大米的树,还有改变人体细胞的性质,消除像白血 As the saying goes: “The seeds are melon, and the beans are beans.” Ordinarily, a cow can produce only a calf rather than a puppy, and a pig can produce only a piglet instead of a lamb Is a common genetic knowledge. But can we change the situation so that we can not get the seeds, we can not grow the beans, but we can get what we want according to the human will? For example, if we cultivate a cow covered with curly wool and a swan Large ducks, chickens that swim, and wheat rooted with sweet potatoes, trees with branches and knots of rice, as well as altering the properties of human cells and eliminating the appearance of white blood