Question

what happens during anaphase?
the sister chromatids are pulled apart to opposite sides of
the cell.
the chromosomes condense, and the centrioles move toward
opposite sides of the cell.
the cell grows, replicates its dna, and prepares to divide.
the chromosomes align in the center of the cell.

Explanation:

To determine the correct answer, we analyze each option based on the events of anaphase in mitosis:

• Option 1: In anaphase, the sister chromatids (which are attached at the centromere) are separated by the spindle fibers and pulled to opposite poles (sides) of the cell. This matches the definition of anaphase.
• Option 2: Chromosome condensation and centriole movement to opposite sides occur during prophase, not anaphase.
• Option 3: Cell growth, DNA replication, and preparation for division happen during interphase, specifically the G1, S, and G2 phases, not anaphase.
• Option 4: Chromosomes aligning in the center of the cell is the event of metaphase, not anaphase.

Answer:

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