What happens during anaphase in mitosis?

• A. The cell grows and duplicates its DNA.
• B. Sister chromatids are pulled apart to opposite poles of the cell.
• C. The nuclear envelope re-forms around each set of chromosomes.
• D. Chromosomes align at the cell's equatorial plane.

Answer: (B)

Verified step by step guidance

1. Understand that mitosis is a process of cell division that results in two genetically identical daughter cells.
2. Recognize that anaphase is one of the stages of mitosis, following metaphase and preceding telophase.
3. During anaphase, the sister chromatids, which are identical copies of a chromosome, are separated.
4. The separation occurs as the spindle fibers shorten, pulling the sister chromatids toward opposite poles of the cell.
5. This movement ensures that each daughter cell will receive an identical set of chromosomes, crucial for maintaining genetic consistency.