The G、C-Banding Study of Microtus Mandarinus
Li Zhen 1 Zhu Bicai 2 Gao Huan 2 Li Ailing 2 Zhang Yong 2 1(Shandong Research Institute of Medical Instruments,Jinan 250013) 2(Xuzhou Normal University,Xuzhou 221116)
The G、C-banding-Karyotype of Microtus mandarinus are researched in the paper,and the characters of G-banding are limned.There are three kinds of polymorphic type in the first pair chromosomes in ten individuals studied.That is ,(1)both are metachromosomes;(2)only one metachromosome;(3)without metachromosome.This is caused by Robertsonian Translocation.We think the evolution tredency of karyotype of Microtus mandarinus may be robertsonian fission of No.1. Additionally,we also assure there are polymorphic types in X ses chromosomes of male and female,through the comparision of their G and C bands,and one is metachromatic chromosome,the other is subchromatic chromosome.
【CateGory Index】： Q959.837