10) Metaphase-1 OR 26) OR Meiosis is the process of formation of 4 haploid daughter cells from one diploid parent cell. It occurs in the somatic cell of individuals for the formation of gametes. It is also known as reductional division. The process of meiosis takes into account independent assortment during metaphase 1 of meiosis 1. During this process, all the pairs of chromosomes a line at equatorial plate independently of each other. There are multiple ways by which a given number of chromosomes can align at equatorial plate during metaphase 1 which is responsible for giving rise to a variety of gametes formed by a given cell.
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This process is crucial for the formation of gametes (sperm and egg cells) and is also known as reductional division, as it reduces the chromosome number by half. During meiosis, there are two consecutive cell divisions: meiosis I and meiosis II. Meiosis I is Show more…
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Adi S.
Production of haploid sex cells During meiosis, the parent cell undergoes a sequence of two divisions referred to as meiosis I and meiosis II. Sperm production through this two-step sequence involves four rounds of cell division. During meiosis I, homologous chromosomes form a bond (synapse) with each other. At the completion of meiosis, two daughter cells are formed, each with half the number of chromosomes of the parental cell. During meiosis II, cell division follows the same pattern as that of mitotic cell division. Meiosis involves one round of DNA replication followed by two rounds of cell division.
The process of meiosis is responsible for creating much of the genetic variation seen in sexually reproducing organisms. Which events in the process of meiosis generate this genetic variability? Homologous pairs align along the metaphase plate independently of the other pairs. The arms of adjacent chromatids cross over and switch places with each other in prophase. Meiosis produces unique haploid daughter cells to be used for producing sex cells in mitosis: Sister chromatids separate and move to opposite poles of the cell in anaphase II.
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