47514.4 The mechanism of meiotic crossing-overainner chromatidAinner chromatidDouble-strand breakand erosion of endsBroken end invasionand loop formationMigration of loopand synthesisGap-filling andunion of free endsBreakage and reunionat 2 and 3Hollidaystructure5aBreakage and reunionat 2 and 45bRepair to Full double-helicalcrossoverThis will bea 6:2 octad.This will bea 6:2 octad.If no /repair,a 5:3 octad would result.NoncrossoveroutcomeaAAAaAAAHeteroduplexwith mismatchAAA21324413AAAAAaaAAaDNA double helix3'endsDNA double helix
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This note was uploaded on 01/10/2011 for the course BIOL BIOL taught by Professor Johnson during the Spring '08 term at Aberystwyth University.