当一个婴儿呱呱落地的时候,全家人都会为一个新的生命降临到这个世界上来而感到高兴。细心的祖母或外祖母也许会很快地告诉全家人,这孩子的眼睛长得像妈妈。嘴巴耳朵长得像爸爸……这个“像”字就已经暗示人们,父母的某些外貌已经传递给了自己的孩子,这种由父母亲将某些外观传递给孩子的过程称之为遗传。严格地讲遗传是父母双亲将各自的一套遗传物质 When a baby is born, the whole family is happy for a new life to come to this world. Attentive grandmother or grandmother may tell the whole family quickly, the child’s eyes look like mother. Mouth and mouth look like dad ... This “like” word has already hinted people, some of the appearances of parents have passed to their children, this process of passing some of the appearance by the parents to the child is called Genetic. Strictly speaking, inheritance is a set of genetic material that parents and parents will each have