Mitosis, a type of cell division, is observed in ?
Correct answer: E. None of these
- A. E. Coli
- B. Nostoc
- C. Blue green algae
- D. Cyanobacteria
- E. None of these
Explanation
Mitosis is the process by which a eukaryotic somatic cell divides to produce two genetically identical daughter cells. It ensures that each daughter gets an exact copy of the parent cell's linear chromosomes; the DNA is first replicated during S phase of interphase, and then mitosis apportions the duplicated chromosomes so the two new nuclei are genetically identical. Mitosis proceeds through a well-defined sequence of stages - prophase, prometaphase, metaphase, anaphase, and telophase - coordinated with cytokinesis (physical cell splitting). Key features of mitosis include condensation of chromatin into visible chromosomes, formation of the mitotic spindle (microtubule-based apparatus) to move chromosomes, and precise separation of sister chromatids to opposite poles.
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About Prokaryotic and Eukaryotic Cells
Prokaryotic cells lack a membrane-bound nucleus and complex membrane-bound organelles, whereas eukaryotic cells contain a nucleus, specialized organelles and a cytoskeleton. Comparisons include DNA organization, ribosomes, cell walls, size, division and examples such as bacteria, archaea, protists, fungi, plants and animals.
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