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| 1. |
What are difference between mitosis and meiosis |
| Answer» \tTypesMitosisMeiosis\xa0Interphase\xa0Each chromosome replicates. The result is two genetically identical sister chromatids.\xa0Interphase – Chromosomes not yet visible but DNA has been duplicated or replicated.\xa0Prophase\xa0Prophase I – crossing-over recombination – Homologous chromosomes (each consists of two sister chromatids) appear together as pairs. Tetrad is the structure that is formed. Segments of chromosomes are exchanged between non-sister chromatids at crossover points known as chiasmata (= crossing-over).\xa0Prophase –Each of the duplicated chromosomes appears as two identical or equal sister chromatids, The mitotic spindle begins to form. Chromosomes condense and thicken.\xa0Metaphase\xa0Metaphase I Chromosomes adjust on the metaphase plate. Chromosomes are still intact and arranged as pairs of homologues.\xa0Metaphase -The chromosomes assemble at the equator at the metaphase plate.\xa0Anaphase\xa0Anaphase I Sister chromatids stay intact. But homologous chromosomes drift to the opposite or reverse poles.\xa0Anaphase – The spindle fibres begin to contract. This starts to pull the sister chromatids apart. At the end of anaphase, a complete set of daughter chromosomes is found each pole.\xa0Mode of Reproduction\xa0Asexual Reproduction.\xa0Sexual\xa0Reproduction.\t | |