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QUESTION 18 Briefly describe why E. coli wants to express different amounts of the lac operon genes...

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Biology

QUESTION 18

Briefly describe why E. coli wants toexpress different amounts of the lac operon genes in relation tothe presence/absence of glucose and lactose and themolecular mechanism by which it does so for eachof the four conditions with respect to glucose and lactose.

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Ans In presence of glucose there will not be expression of structural genes of lac operon ielacZ lacY and lacA genes because the enzymes produced by these genes ie betagalactosidase galactoside permease and transacetylase    See Answer
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