Question

Which of the following is the correct order of events in mitosis?

Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the mitotic spindle. The nucleus reforms and the cell divides. Cohesin proteins break down and the sister chromatids separate.
The kinetochore becomes attached to the mitotic spindle. Cohesin proteins break down and the sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus reforms and the cell divides.
The kinetochore becomes attached to the cohesin proteins. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus reforms and the cell divides.
The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. Cohesin proteins break down and the sister chromatids separate. The nucleus reforms and the cell divides.

Answer 1

The last option is the correct order of events in mitosis.

Step-by-step explanation:

The metaphase stage initiated with the arrangement of sister chromatids on the metaphase plate. Post arrangement, the spindle fibers come and combine with the chromatids kinetochore. The cohesion proteins assist in the robust attachment of the spindle fibers and the kinetochore. After the attachment is done, the pulling of sister chromatids takes place towards the pole. The dissociation of cohesion proteins takes place, and the nucleus begins to form again and thus, a novel cell gets formed.