论文部分内容阅读
人类丫染色体很大部分是异染色质，它易发生形态学变化。关于大丫产生的临床效应，曾有过争论，有人认为大丫是一种正常变异，无临床意义。还有的研究提示，大丫是来自丫染色质中的ＤＮＡ过多的重复，指出大丫与胎儿发生异常之间有某种关联。我们对１０例大丫染色体的遗传学效?
Most human chromosomes are heterochromatin, which is prone to morphological changes. There have been controversies about the clinical effect of Ah, some people think Ah Ah is a normal mutation, no clinical significance. There are studies suggest that Ya is from Ya chromatin in the excessive duplication of DNA, pointed out that there is a link between Ya and fetal abnormalities. We have 10 cases of Ayak chromosome genetic effect?