FA2011lecture11

FA2011lecture11 - sweet peas colorless precursor 1 A gene...

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colorless precursor 1 colorless precursor 2 purple pigment A gene enzyme B gene enzyme sweet peas aa blocked here bb blocked here
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colorless precursor 1 colorless precursor 2 purple pigment A gene enzyme B gene enzyme sweet peas aa B- and aa bb blocked here A- bb blocked here AA bb X aa BB white white F 1 all Aa Bb purple self F 2 : 9/16 A- B- purple 3/16 A- bb white 3/16 aa B- white 1/16 aa bb white If both single mutants and double mutant have same phenotype, overall ratio in F 2 is 9/16 wt 7/16 mutant
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Flower color mutants in Blue-eyed Mary colorless precursor pink precursor blue pigment W gene enzyme P gene enzyme pathway blocked here in ww mutants pathway blocked here in pp mutants wild type mutant 1 mutant 2
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Flower color mutants in Blue-eyed Mary wild type mutant 1 mutant 2 ww PP X WW pp F 1 all Ww Pp white pink blue w mutation is epistatic to p mutation Overall F 2 ratio: 9/16 blue 4/16 white 3/16 pink F 2 : 9/16 W- P- blue 3/16 W- pp pink 3/16 ww P- white 1/16 ww pp white
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brown precursor
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FA2011lecture11 - sweet peas colorless precursor 1 A gene...

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