secondary constriction

基本解釋

The secondary constriction has been observed on the centromere region of the chromosome No.
染色體短臂近著絲粒區(qū)觀察到次縊痕。
It is presumed that the repeated DNA sequences of the heterochromatin near the secondary constriction might be formed gradually in the process of evolution through unequal SCEs.
推測副縊痕附近異染色質(zhì)的DNA重復(fù)序列可能是在進(jìn)化過程中通過染色單體不均等交換而逐漸形成。
There were 17 cases of chromosome polymorphism, accounting for 9.83% of all abnormal karyotypes. It contains Y chromosome, secondary constriction, and variation of satellites.
染色體多態(tài)性17例，占異常核型的9.83%，主要包括Y染色體多態(tài)性、次縊痕和隨體的變異。