Which of the following occurs during prophase?
A)Chromosomes line up on the midline of the cell.
B)The nuclear envelope forms.
C)Sister chromatids separate.
D)The mitotic spindle begins to form.

Question

Quizplus · Accepted Answer

During prophase, the mitotic spindle begins to form. This structure is made up of microtubules that will eventually pull the separated sister chromatids to opposite ends of the cell during mitosis. Chromosomes also condense and become visible, but they do not yet line up on the midline of the cell (metaphase) and the nuclear envelope breaks down instead of forming (allowing the spindle to interact with the chromosomes).

Which of the Following Occurs During Prophase