【摘要】 本文利用同工酶电泳方法,研究了中国胭脂鱼的种群关系。分析的五种酶均为单态,故中国胭脂鱼应为一个种。并根据重复基因表达(祖征)情况,认为它应属于较原始的种类。少数重复基因不表达,形成功能二倍体为离征。其酶谱表现了组织的异质性,伹无性别、年龄的差异。更多还原

【Abstract】 By using the method of electrophoresis, the population relationship of Myxocypri-nus asiaticus is studied by isozyme analysis.All of the enzymes are found to be mono-morphic. Hence the Chinese suckers are considered to belong to one species. On the basis of the charecteristics of the duplicate gene expressions (pleisiomorphy), it is regarded as a primitive species in Catostomidae. Some of the duplicate genes "silenced" yield functional diploidization. Many of the duplicate genes are diverged in their tissues, and there is no electrophorectic difference observed between males and females, nor among the fish of different ages.更多还原