Number of centrioles in a cell after completion of G2 phase and during metaphase of mitosis is_ and_ respectively.
Correct answer: C. 4,4
- A. 2,2
- B. 2,4
- C. 4,4
- D. 4,2
Explanation
A typical non-dividing animal cell has 2 centrioles. Duplication of centrioles occurs during G2 phase so after G2 it becomes 4. During metaphase, each pole of the cell has a pair of centrioles, i.e 4 as total.
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Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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