摘要
应用显微切割技术获得赤麂１号、Ｙ１、Ｙ２染色体，通过ＤＯＰ－ＰＣＲ增加模板ＤＮＡ拷贝数，然后用人的性别决定基因（Ｓｅｘ－ｄｅｔｅｒｍｉｎｉｎｇ Ｒｅｇｉｏｎ ｏｆ ｔｈｅ Ｃｈｒｏｍｏｓｏｍｅ Ｙ， ＳＲＹ）中ＨＭＧ框内设计１对引物，对ＤＯＰ－ＰＣＲ产物进行扩增。在雄性赤麂Ｙ２染色体ＤＯＰ－ＰＣＲ产物中扩增出与人ＳＲＹ基因同源的Ｓｒｙ基因片段，克隆、测序，首次在分子水平上证明赤麂Ｙ２染色体是真正的Ｙ染色体，同时对赤麂Ｓｒｙ基因进行了初步定位。
We isolated 1, Y1, Y2 chromosomes of the male M.m vaginalis by microdissection and amplified the DNA copies by DOP-PCR. Using the DOP-PCR products of 1, Y1, Y2 chromosomes of M.m vaginalis as template respectively and the primers designed within human SRY HMG box, the Sry gene of the male M.m vaginalis was amplified, and it was cloned and sequenced. It is proved that Y2 is the real sex chromosome in the male M.m vaginalis at molecular level for the first time, and Sry was localized on Y2 chromosome.
基金
国家自然科学基金资助!(No.39670393)
