姐妹染色单体(英语:Sister chromatids,或称姊妹染色单体)是指被同一个着丝粒相连接的两个完全相同的染色体拷贝之一. 联会四分体 同源染色体交叉互换怎么会形成完全相同的染色体? 2减数分裂中是怎么形成姐妹染色单体的?姐妹染色单体(英语:Sister chromatids,或称姊妹染色单体)是指被同一个着丝粒相连接的两个完全相同的染色...
我看见 姐妹染色单体(英语:Sister chromatids,或称姊妹染色单体)是指被同一个着丝粒相连接的两个完全相同的染色体拷贝之一.减数分裂同源染色体只复制一次,复制后有4条染色单体,两两相同是这样的吧?,然后他们要联会交叉互换,这样他们交叉互换之后不就是不一样了吗?为什么后2期还会有两个完全相同姐妹染色单体分开?
ELSEVIERBrenners Encyclopedia of Genetics
Separation and Distribution: During mitotic anaphase or meiotic anaphase II, the cohesin protein complex cleaves leading to the dissolution of the cohesion between sister chromatids. As sister chromatids separate, they start moving towards the cell’s opposite poles, hence ensuring an equal distribution...
我看见 姐妹染色单体(英语:Sister chromatids,或称姊妹染色单体)是指被同一个着丝粒相连接的两个完全相同的染色体拷贝之一.减数分裂同源染色体只复制一次,复制后有4条染色单体,两两相同是这样的吧?,然后他们要联会交叉互换,这样他们交叉互换之后不就是不一样了吗?为什么后2期还会有两个完全相同姐妹染色单体分开?
During the anaphase of mitosis, sister chromatids are released only once in response to the depolymerization of cohesions in the centromere and monopolar orientation of the kinetochores. Meiosis, in contrast, involves two steps to mediate the cohesion release of chromatids: the first occurs cohesion...
百度试题 题目Sister chromatids (姊妹染色单体) 相关知识点: 试题来源: 解析 由复制产生的一个染色体的拷贝。反馈 收藏
Sister-chromatidexchanges,indicesof humanchromosomedamage and repair: detection by fluorescence and induction by mitomycin C. Proc. Nati. Acad. Sci. USA, 71: 3162-3166,1974.Latt, S. A.: Sister chromatid exchanges, indices of human chromosome damage and repair: Detection by fluorescence and ...
Understand the definition of sister chromatids: Sister chromatids are identical copies of a single chromosome, connected by a centromere. They are not homologous chromosomes, which are pairs of chromosomes (one from each parent) that have the same genes but may have...
Chromatids are formed when a chromosome replicates to form two identical chromatids, or sister chromatids. Therefore, chromatids are made of all the genetic material contained in a chromosome. What are sister chromatids in meiosis? Meiosis represents a process of cell division involving two rounds...