Q.
The given figure shows lac operon and its functioning. Select the option which correctly labels $A, B, X, Y$ and $Z$.
A $\,\,$
B $\,\,$
X $\,\,$
Y
Z
(a)
Repressor
Inducer
$\beta$-galactosidase
Permease
Transacetylase
(b)
Repressor
Inducer
Permease
$\beta$-galactosidase
Transacetylase
(c)
Inducer
Repressor
$\beta$-galactosidase
Permease
Transacetylase
(d)
Inducer
Repressor
$\beta$-galactosidase
Transacetylase
Permease
| A $\,\,$ | B $\,\,$ | X $\,\,$ | Y | Z | |
|---|---|---|---|---|---|
| (a) | Repressor | Inducer | $\beta$-galactosidase | Permease | Transacetylase |
| (b) | Repressor | Inducer | Permease | $\beta$-galactosidase | Transacetylase |
| (c) | Inducer | Repressor | $\beta$-galactosidase | Permease | Transacetylase |
| (d) | Inducer | Repressor | $\beta$-galactosidase | Transacetylase | Permease |
Molecular Basis of Inheritance
Solution: