During which phases of mitosis are chromosomes composed of two chromatids?
Correct answer: D. From G2 of interphase through metaphase
- A. From G1 of interphase through metaphase
- B. From metaphase through telophase
- C. From anaphase through telophase
- D. From G2 of interphase through metaphase
Explanation
During the phases of mitosis from G2 of interphase through metaphase, chromosomes are composed of two chromatids. This occurs after DNA replication during the S phase of interphase, where each chromosome is duplicated to form two sister chromatids held together by a centromere. These chromatids remain attached until they separate during anaphase of mitosis.
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