Question

what happens during anaphase? the chromosomes align in the center of the cell. the sister chromatids are pulled apart to opposite sides of the cell. two daughter cells form as the cytoplasm divides. the chromosomes unravel.

Explanation:

• Analyze each option:
• "The chromosomes align in the center of the cell" describes metaphase, not anaphase.
• "The sister chromatids are pulled apart to opposite sides of the cell" is the key event of anaphase, as the spindle fibers pull the sister chromatids (now called chromosomes) to opposite poles.
• "Two daughter cells form as the cytoplasm divides" is cytokinesis, which occurs after mitosis.
• "The chromosomes unravel" happens during telophase (or interphase when chromatin is relaxed).

Answer:

The sister chromatids are pulled apart to opposite sides of the cell.