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    faezeh's Avatar
    faezeh Posts: 9, Reputation: 1
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    #1

    Jan 6, 2008, 10:17 AM
    Crossing over
    Hi,
    Is crossing over a kind of mutation?
    N0help4u's Avatar
    N0help4u Posts: 19,823, Reputation: 2035
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    #2

    Jan 6, 2008, 10:22 AM
    I suppose it would depend WHERE you are going
    asking's Avatar
    asking Posts: 2,673, Reputation: 660
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    #3

    Jan 6, 2008, 01:48 PM
    Read about chromosomal mutations here, then let us know what you think and why.

    Mutation - Wikipedia, the free encyclopedia
    faezeh's Avatar
    faezeh Posts: 9, Reputation: 1
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    #4

    Jan 6, 2008, 10:05 PM
    Hi,
    I read the text.


    Mutation is a change in genetic material of a cell and it can be good or bad.Mutation cause difference in species and natural selection let the best individuals live to reproduce.
    The sequence of a gene can be altered in different ways and one of them is chrosomal translocation.Translocation occurs in nonhomologous chromosomes(I think crossing over is a kind of translocation wich occurs in homologous chromosomes!Because it is a change in genetic material,I think it can be a kind of mutation.)
    asking's Avatar
    asking Posts: 2,673, Reputation: 660
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    #5

    Jan 7, 2008, 11:53 AM
    I'm pretty sure that crossing over is not considered a mutation. Crossing over is an exchange of material between homologues, rather than nonhomologous chromosomes. When homologues pair, near-identical sequences are brought into contact and exchange places.

    A translocation occurs between different chromosomes.

    I hope this helps. I thought this was a great question (and I'm not absolutely sure I answered it correctly). I never thought of this because these topics are usually treated separately in text books.
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