Which phase features chromatids separating and moving toward opposite poles?

Which phase features chromatids separating and moving toward opposite poles?

• A. Prophase
• B. Metaphase
• C. Telophase
• D. Anaphase

Answer: (D)

The phase where chromatids separate and move toward opposite poles is the stage when sister chromatids are pulled apart at the centromeres and race to opposite ends of the cell. This happens as kinetochores shorten their attached microtubules and motor proteins help reel the chromatids in, while other spindle fibers push the poles farther apart. The result is that each new cell will receive a complete set of chromosomes. In contrast, prophase is when chromosomes condense, metaphase has them lining up at the center, and telophase is when they arrive at the poles and de-condense with new nuclei forming.

The phase where chromatids separate and move toward opposite poles is the stage when sister chromatids are pulled apart at the centromeres and race to opposite ends of the cell. This happens as kinetochores shorten their attached microtubules and motor proteins help reel the chromatids in, while other spindle fibers push the poles farther apart. The result is that each new cell will receive a complete set of chromosomes. In contrast, prophase is when chromosomes condense, metaphase has them lining up at the center, and telophase is when they arrive at the poles and de-condense with new nuclei forming.