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Genetics and Genomics

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Determining the Order of Mutants in a Synthesis Pathway

GENES-NKKMHO

You are examining seven mutant yeast labeled​ 1 through 7. Each mutant has a mutation in a different gene in the synthesis pathway. When plated on minimal media none of the mutants are able to grow. To further examine the mutants you plate them on media containing 7 different intermediates in the pathway. The following table shows the patterns of growth for each mutant on each type of media. A "+" means growth and a "-" means no growth.

1 2 3 4 5 6 7
A + + + - + + +
B - + + - - + -
C - + + - + + -
D - + - - - + -
E - + + - + + +
F + + + + + + +
G - + - - - - -

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Using the results, determine where in the pathway the mutants lie.

The order of the mutants from earliest in the pathway to the latest are

,

,

,

,

,

,

.