Identifying Mitosis-Specific Features Steps:

• Recall mitosis divides nucleus into two identical diploid nuclei for somatic cell growth and repair.
• Distinguish mitosis from meiosis: mitosis lacks genetic recombination and produces identical cells, unlike meiosis's reduction division.
• Evaluate feature 1: crossing over occurs in meiosis prophase I, not mitosis.
• Evaluate feature 2: centromere division and sister chromatid separation define mitosis anaphase.
• Evaluate feature 3: production of four haploid nuclei is meiotic, not mitotic.

Why D is correct:

• Mitosis features only centromere division (2), as it ensures identical chromosome sets per daughter nucleus.

Why the others are wrong:

• A includes non-mitotic features 1 and 3 (meiosis-specific).
• B includes non-mitotic feature 1.
• C includes non-mitotic feature 3.

Final answer: D