Meiocyte – Class 12 | Chapter – 1 | Short Notes Series PDF
Meiocyte: A meiocyte is defined as a cell that differentiates into a gamete through the process of meiosis. It is a diploid cell. Through meiosis, the meiocyte divides into four genetically different haploid gametes. The haploid gametes produced are called meiospores.
Events of Meiocyte
- Crossing over occurs between non-sister chromatids of homologous chromosomes during the pachytene stage of prophase I in which segments are exchanged and a recombination nodule is formed.
- In chiasma formation, the crossing over results in the formation of an X shaped structure, during the diplotene stage of prophase I.
- The terminalisation of chiasma occurs during the diplotene stage of Prophase. The homologous chromosomes separate from one another except for in the spot of the traverse.
- The chromosomes align at the equatorial plate during metaphase which they get pulled apart during anaphase.
- The cell undergoes cytokinesis and divides into two cells each having half the number of chromosomes as the parent cell.
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