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Title: In what ways does meiosis ensure genetic diversity in offspring? Post by: _Mil96 on Jun 17, 2013 In what ways does meiosis ensure genetic diversity in offspring?
Title: In what ways does meiosis ensure genetic diversity in offspring? Post by: mia23623 on Jun 17, 2013 During meiosis, unlike mitosis, crossing-over occurs. This is the main mechanism that causes genetic diversity.
Crossing-Over Example Chromosomes Before Crossing-Over ABCDEF ABCDEF a b c d e f a b c d e f After the Process of Crossing-Over ABCd e f ABCDe f a b c DEF a b c d EF Crossing-over is another name for recombination or physical exchange of equal pieces of adjacent non-sister chromatids. When crossing-over occurs chromatids break and may be reattached to a different homologous chromosome. During the process of crossing-over one of the paired chromosome arms may exchanged physically at one or more locations. If the two chromosomes contain different mutations on each side of the cross-over the exchange of chromosome arms will produce chromosomes that contain different combinations of mutations. When these chromosomes segregate in meiosis, they form gametes that have completely new combinations of alleles. The source has much more info or search for Crossing Over Title: In what ways does meiosis ensure genetic diversity in offspring? Post by: iitzjustin on Jun 17, 2013 in prophase 1 crossing over occur between non sister chromatid and at metaphase 1, the homologous chromosome assort randomly at metaphase plate
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