Biology · CELL CYCLE AND CELL DIVISION
हिन्दीAt which mitotic stage does the complete disappearance of the nuclear envelope occur, and what is the specific site for spindle fibre attachment on the chromosomes?
Correct answer · Option 2
Metaphase; Kinetochores located on the surface of centromeres
Explanation
The complete disintegration of the nuclear envelope marks the start of metaphase, where small disc-shaped structures called kinetochores on the surface of centromeres serve as sites of spindle attachment.