Question

DNA duplication occurs at which of the following stage?

• A. Meiosis II
• B. Mitotic interphase
• C. Mitosis only
• D. Both, meiosis and mitosis

Answer 1

Answer: (D)

Both, meiosis and mitosis

DNA duplication occurs at mitosis and meiosis both. In mitotic cell division, the amount of DNA in the daughter cells will be equal to the parent cell and DNA will be double of the parent cell. In general, karyokinesis that is the division of the nucleus is followed by cytokinesis, which divides the cytoplasm, organelles, and cell membrane into two new cells containing roughly equal shares of these cellular components. Mitosis is the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell. While in meiosis the DNA of each chromosome is replicated so that it consists of two identical sister chromatids.

So, the correct answer is option D.