Meiosis - Research Article from World of Biology

This encyclopedia article consists of approximately 5 pages of information about Meiosis.
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Events of meiosis

The events that take place during meiosis are similar in many ways to the process of mitosis, in which one cell divides to form two clones (exact copies) of itself. It is important to note that the purpose and final products of mitosis and meiosis are very different.

Meiosis I

Meiosis I is preceded by an interphase period in which the DNA replicates (makes an exact duplicate of itself), resulting in two exact copies of each chromosome that are firmly attached at one point, the centromere. Each copy is a sister chromatid, and the pair are still considered as only one chromosome. The first phase of meiosis I, prophase I, begins as the chromosomes come together in homologous pairs in a process known as synapsis. Homologous chromosomes, or homologues, consist of two chromosomes that carry genetic information for the same traits, although that information may hold...

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This section contains 1,287 words
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Meiosis from World of Biology. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.
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