The process that occurs during prophase of the mitotic cell cycle in an animal cell is the:
Correct answer: B. Separation of centrioles
- A. Replication of DNA
- B. Separation of centrioles
- C. Division of centromeres
- D. Formation of chromatids
Explanation
During prophase of the mitotic cell cycle, one of the key processes is the separation of centrioles, which move to opposite poles of the cell and begin forming the spindle apparatus necessary for chromosomal separation. This is a critical step in preparing for metaphase and eventual cell division. The other options describe events that occur at different stages of the cell cycle: DNA replication occurs during the S phase, centromeres divide during anaphase, and chromatids are formed as a result of DNA replication earlier in the cell cycle.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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