According to lac operon concept, which functional unit of the bacterial genetic material is responsible for suppressing the activity of the operator gene in the absence of lactose?

A) Structural gene
B)Regulator gene
C)Repressor gene
D)Promoter gene

Question

According to lac operon concept, which functional unit of the bacterial genetic material is responsible for suppressing the activity of the operator gene in the absence of lactose?

A) Structural gene
B)Regulator gene
C)Repressor gene
D)Promoter gene

shreehari499 · Answer

@SolidIceCream  any idea?

solidicecream · Answer

Im thinking I haven't done genetics in a while.

shreehari499 · Answer

I think it might be B

anonymous · Answer

Repressors bind to the Operator, coding sequences on the DNA strand that are close to or overlapping the promoter region, impeding RNA polymerase's progress along the strand, thus impeding the expression of the gene.The image to the right demonstrates regulation by a repressor in the lac operon.

The correct option is (C) repressor gene

solidicecream · Answer

I have to agree with @biochemistrylife.

shreehari499 · Answer

Thanks guys...:)

anonymous · Answer

Your welcome @SolidIceCream  and @shreehari499