Which enzyme is the expression product of the $y$ gene in the $lac$-operon?

  • A
    Beta-galactosidase
  • B
    Permease
  • C
    Transacetylase
  • D
    Lactase

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Similar Questions

Statement-$I$: Lac operator is present only in lac operon and it interacts specifically with lac-repressor only.
Statement-$II$: Each operon has its specific operator and specific repressor.

Wild type $E. coli$ cells are growing in a normal medium with glucose. They are transferred to a medium containing only lactose as the sugar. Which one of the following changes takes place?

What does an operon represent?

What happens if an $ATT$ sequence appears in the middle of the template strand of the $Lac\, y$ gene?

Who proposed the operon model for the first time?

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