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BiologyJan3rd2007 - that contains new combinations of...

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Dustin Lee 1/3/2007 Biology Block C 1. When crossing over begins, homologous chromosomes are closely paired all along their lengths. There is a precise gene-by-gene alignment between adjacent chromatids of the two chromosomes. Segments of the two chromatids can be exchanged at one or more sites. Crossing over can produce a single chromosome
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Unformatted text preview: that contains new combinations of genetic information from different parents. 2. In meiosis there is a process called “crossing over” in prophase I which allows new combinations of genetic information to form. Also in meiosis, there ends up being four cells instead of 2....
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