Meiosis

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Meiosis is a type of cell division which lowers the chromosome number by half. This process happens in all sexually reproducing eukaryotes.

Steps in meiosis.

Prophase 1: The chromosomes come together, and crossing over* begins.

Metaphase 1: pairs of homologous* chromosomes move over to the center of the cell.

Anaphase 1: homologous move to the opposite sides of the cell.

telophase 1 and cytokinesis: chromosomes gather at the side of the cells, and cytoplasm divides.

Prophase 2: A new spindle forms around the chromosomes.

Metaphase 2: chromosomes line up at the equator of the cell.

Anaphase 2:Centromeres split up. chromatids move to the opposite sides of the cells.

Telophase 2 and cytokinesis: A nuclear envelope forms around each set of chromosomes. the cytoplasm divides.


*: cross over- when two chromosomes, normally two homologous instances of the same chromosome, break and then reconnect but to the different end piece.


*:homologous- pairing at meiosis and having the same structural features and pattern of genes.

The steps to Meiosis

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Sexual vs Asexual reproduction

Meiosis is a form of sexual reproduction.


sexual reproduction is the process in which an organism needs a partner in order to reproduce.


asexual reproduction is the process in which an organism does not require a partner to reproduce.`

Meiosis