Which process ensures two genetically identical nuclei form during cell division?

Which process ensures two genetically identical nuclei form during cell division?

• A. Cytokinesis
• B. Mitosis
• C. Meiosis
• D. Fertilization

Answer: (B)

Two genetically identical nuclei form when the cell’s chromosomes are duplicated and then evenly separated into two new nuclei during nuclear division. This happens in mitosis, where one round of chromosome replication is followed by the careful pulling apart of sister chromatids so each daughter nucleus receives an identical set of chromosomes. Cytokinesis then splits the cytoplasm to produce two separate cells, each with its own identical nucleus. In contrast, meiosis halves the chromosome number and introduces genetic variation, yielding non-identical nuclei, and fertilization merges two nuclei into one. So the process that guarantees two genetically identical nuclei is mitosis.

Two genetically identical nuclei form when the cell’s chromosomes are duplicated and then evenly separated into two new nuclei during nuclear division. This happens in mitosis, where one round of chromosome replication is followed by the careful pulling apart of sister chromatids so each daughter nucleus receives an identical set of chromosomes. Cytokinesis then splits the cytoplasm to produce two separate cells, each with its own identical nucleus. In contrast, meiosis halves the chromosome number and introduces genetic variation, yielding non-identical nuclei, and fertilization merges two nuclei into one. So the process that guarantees two genetically identical nuclei is mitosis.