This lesson is going to cover the process of Meiosis by looking at
Meiosis is a type of cell division that is specific to sex cells. In this type of cell division, germ cells are going through a division in order to form gametes, which are sperm cells or egg cells. The result of meiosis is haploid daughter cells, and haploid cells contain half as many chromosomes as the original parent cell.
In humans, meiosis starts out with a germ cell of 46 chromosomes and ends up with haploid daughter cells that each have 23 chromosomes.
There are two rounds of cell division to form gametes, called meiosis I and meiosis II. Each round of meiosis is similar to mitosis. There are two types of meiosis depending on if it is creating a sperm or an egg gamete:
The process of meiosis is similar to mitosis.
The cells still need to go through another round of cell division in order to ensure they end up with only 23 chromosomes in each cell.
After telophase I is done, the cells begin meiosis II.
The reason sex cells are haploid is because when the sperm fertilizes the egg and the nuclei combine with to form a diploid cell.
In humans the both the sperm cell and the egg contain 23 chromosomes which combine to give a total of 46. In you, half of these came from your mother and half from your father.
Meiosis is the process of cell division that creates gametes. There are two phases of Meiosis. In Meiosis I the cell goes through prophase I, like in mitosis, homologous chromosomes will condense and pair up. Unlike mitosis, they will also swap segments of themselves to create genetic variability. The cell will move through metaphase I and anaphase I, ending in telophase I with two haploid cells. Meiosis II is similar, but result in four haploid cells.
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Source: SOURCE: THIS WORK IS ADAPTED FROM SOPHIA AUTHOR AMANDA SODERLIND
Cells that contains two sets of each chromosome.
A sex cell such as sperm or egg which contains a haploid number of chromosomes.
The number of chromosomes in the gametes of an organism which is equal to half of the number of chromosomes of somatic cells.
A type of cell division that occurs in sex cells to produce haploid gametes.
The first round of cell division in meiosis.
The second round of cell division in meiosis.
The process that forms a haploid egg cell and a polar body.
The process that forms 4 haploid sperm cells.