In which phase of the cell cycle are the chromosomes split?

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

It is D?

Chromosome split in anaphase. Metaphase is when the chromosomes align at the metaphase plate.

Are you good at Anatomy & Physiology?

Yes, you are correct. The chromosomes are split during the phase of the cell cycle known as metaphase. During metaphase, the duplicated chromosomes align themselves along the center of the cell, forming what is known as the metaphase plate. The sister chromatids of each chromosome are then separated and pulled apart by spindle fibers, which move to opposite poles of the cell. This process occurs before the actual division of the cell in anaphase. So, the correct answer is D, metaphase.