At what point during the cell cycle does genetic recombination occur?

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At the four-strand stage, when each member of a homologous chromosome pair is composed of two sister chromatids

At the four-strand stage, when a homologous chromosome pair is composed of four sister chromatids

At the two-strand stage, prior to DNA replication, when each member of a homologous chromosome pair is composed of two sister chromatids

At the two-strand stage, when a homologous chromosome pair is comprised of two sister chromatids

 

asked May 12, 2013 in Genetics by GeneX ~Top Expert~ (7,947 points)
    

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At the four-strand stage, when each member of a homologous chromosome pair is composed of two sister chromatids
answered May 12, 2013 by GeneX ~Top Expert~ (7,947 points)



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