!BIO!2110!–!Genetics! Name!______________________________!Recitation!8!–!!!Group!Members!_____________________________!!!!!_________________________!!!!!__________________________!!!Construct!a!recombination!map!from!the!three-factor!cross!data!shown!below.!!In!these!crosses,!progeny!genotypes!are!shown!in!pairs!of!reciprocal!chromosomes!derived!from!the!heterozygous!parent.!!Include!all!five!genes,!A,!Q,!R,!X!and!Z,!in!a!single!recombination!map.!!You!do!not!need!to!calculate!recombination!distances!between!genes,!only!gene!order!on!the!chromosome.!!!!a!!x!!q!A!X!!Q!!x!a!!x!!q!a!!x!!q!!!↓!!A!X!!Q!!280!a!!x!q!!280!!!!A!X!q!!120!a!!x!Q!!120!!!!A!x!!q!!30!a!!X!Q!!30!!!!A!x!Q!!70!a!X!q!!70!!!!a!!z!!q!A!Z!Q!!x!a!!z!!q!a!!z!q!!!↓!!A!Z!Q!!176!a!!z!q!!176!!!!A!Z!q!!32!a!z!Q!!32!!!!A!z!q!!72!a!Z!Q!!72!!!!A!z!Q!!8!a!Z!q!!8!! !!a!!x!!r!A!X!!R!!x!a!!x!!r!a!!x!!r!!!↓!!A!X!!R!!428!a!!x!r!!428!!!!A!X!R!!52!a!!x!r!!52!!!!A!x!!r!!112!a!!X!R!!112!!!!A!x!R!!8!a!X!r!!8!!!!On!your!recombination!map,!the!recombination!frequencies!from!A!–!X!and!from!R!–!X!are!0.2!and!0.1,!respectively.!!Based!on!these!recombination!frequencies,!how!much!crossover!interference!is!there!in!this!region!of!the!genome?!!!!
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