CH3-2 - Chapter 3, Part II Extensions to Mendel;...

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Chapter 3, Part II Extensions to Mendel; Multifactorial P F 1 F 2 X 9 : 7
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What could be a molecular explanation?
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Two genes can interact to determine one trait Combined action of 2 genes Two pure-breeding white sweet pea lines Tan and gray lentils One gene masks another: epistasis Bombay phenotype Coat color
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Bombay phenotype
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Coat color
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P F 1 F 2 X 9 : 4
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P F 1 F 2 X 9 : 4 : 3
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Coat color
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Two genes can interact to determine one trait Combined action of 2 genes Two pure-breeding white sweet pea lines Tan and gray lentils One gene masks another = epistasis Bombay phenotype Coat color Mutation at 1 of 2 or more genes can produce same phenotype Complementation test
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Heterogeneous trait Deafness in humans may be caused by a mutant allele at one of more than 50 different genes Albinism Complementation test Genetic tool to determine whether a phenotype arises from mutations in the same or separate genes A mutant allele at 1 of 2 or more genes yields the same phenotype
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Complementation Test
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This note was uploaded on 11/27/2011 for the course BIOL 12 taught by Professor Kim during the Spring '10 term at LSU.

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CH3-2 - Chapter 3, Part II Extensions to Mendel;...

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