Does amount of DNA halve after mitosis? If yes then please explain with diagrams...
No, it is the meiosis which results in reduction of DNA to half, while mitosis does not change the amount of DNA
Mitosis and meiosis are the two types of cell division.
Mitosis is the type of cell division in which the number of chromosomes in the parent cell and the daughter cells remain same. It occurs in all cells other than reproductive cells. It is also called equational division.
Meiosis is the specialized kind of cell division that reduces the chromosome number by half (thus called reductional division) resulting in production of haploid daughter cells (gametes). It mainly takes place in the reproductive cells or sex cells.
Here, Mitosis has been explained in detail
Mitosis consists of 2 major events: Karyokinesis and Cytokinesis.
Karyokinesis consists of 4 stages: Prophase, Metaphase, Anaphase and Telophase.
1. Prophase: Chromatin condenses to form chromosomes. Initiation of mitotic spindle occurs. Golgi complex, ER, nuclear membrane and nucleolus disintegrate.
2. Metaphase: Chromosomes spread throughtout the cytoplasm. Chromosomes contain 2 chromatids attached to each other through the centromere. Mitotic spindle formation is completed. All chromosomes align themselves at equator. Spindle fibers attach to kinetochore.
3. Anaphase: Centromere which holds the chromatids together splits and daughter chromatids are now called chromosomes of future daughter nuclei. Chromosomes move away from equatorial plate.
4. Telophase: Chromosomes reach poles. Mitotic spindle disappears. After reaching poles, chromosomes uncoil. Nucleolus, ER, Golgi bodies and other organelles reappear. Nuclear envelope reappears.
Hope this information will clear your doubts about the topic.
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