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An organism is able to live to a culture...

An organism is able to live to a culture medium cotaining nutrient A, by the enzyme catalysed reactions :-
`A overset(x) to B overset(y) to C` A mutant failed to survive on this medium but gre when nutrient B was added to it. Which gene of this mutant was defective :-

A

Only X

B

Only Y

C

X and Y both

D

Neither X or Y

Text Solution

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The correct Answer is:
A
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