How many chromosomes are present in a normal human cell? Why are sperm and ova cells called haploid and how do the processes of mitosis and meiosis affect these numbers? Chromosomes in a Normal Human Cell

Chromosomes in a Normal Human Cell


The number of chromosomes present in a normal human cell is 46. Chromosomes are structures found in a cell’s nucleus that contain genetic material. Humans have 23 pairs of chromosomes in each cell, one pair coming from the mother and one from the father (Kalat, 2016). Sperm and ova cells are called haploid cells because they contain only one set of chromosomes. In contrast to a normal human cell, sperm and ova cells contain 23 chromosomes each (Kumar et al., 2019). The processes of mitosis and meiosis are responsible for the difference in the number of chromosomes in a normal human cell compared to a haploid cell. Mitosis is the process of cell division and replication that results in the production of two daughter cells with the same number of chromosomes as the parent cell (Kalat, 2016). Meiosis is the process of cell division that results in four daughter cells, with each daughter cell having half the number of chromosomes. Cont…

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