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大家知道,骡子是马和驴杂交的后代,兼有马和驴的某些优势,具有吃苦耐劳,耐粗食,抗病力强的特点。遗憾的是,骡子不能繁殖后代,原因是马和驴的亲缘关系比较远。在鱼类中也有这种现象,远缘杂交要么得不到后代,要么得到的后代不能生育。为了解决品种退化和在育种中碰到的远缘杂交不育的问题,我国科学工作者运用生物工程手段——细胞核移植技术,选择亲缘关系比较远的鱼类做实验,探讨动物育种的新途径。经过多年的艰苦研究,终于培育出了有一定杂种优势的移核鱼。这一研究成果,在世界上是独一无二的,它具有重大的生物学意义和经济意义,国际科学界对此给予很高的评价。它向人们展示了这样的前景:细胞核移植技术可以为人类在动物育种或品种改
We all know that mules are the offspring of horse and donkey hybrids and have some advantages of horses and donkeys. They have the characteristics of hard-working, crude-resistant, and disease-resistant. Unfortunately, mules can not breed offspring because of the relatives of horses and donkeys. This phenomenon is also observed in fish, distant hybrids either do not get offspring, or the offspring they get are not fertile. In order to solve the problem of variety degeneration and distant hybridization infertility encountered in breeding, our scientists use bioengineering method - nuclear transfer technology to select the fishes with relatively distant genetic relationship to do experiments and explore new ways of animal breeding . After years of painstaking research, finally nurtured a certain heterosis of nuclear fish. This research result is unique in the world. It has great biological and economic significance. The international scientific community highly values this. It shows people the prospect of nuclear transfer technology for human breeding in animals or breed change