Question

Why do different kinds of control mechanisms exist?

Answer 1

(c) is Right Answer

Explanation:

    (c) is Right Answer.

1. A repressor is a DNA-or RNA-restricting protein that restrains the outflow of at least one qualities by authoritative to the operator or associated silencers.
2. A RNA-restricting repressor ties to the mRNA and forestalls interpretation of the mRNA into protein. This hindering of articulation is called repression.
3. Transcribing a gene, RNA polymerase ties to the DNA of the quality at an area called the promoter.
4. It contains acknowledgment locales for RNA polymerase or its aide proteins to tie to.
5. The DNA opens up in the advertiser district with the goal that RNA polymerase can start translation.  
6. Interpretation factors are an exceptionally assorted group of proteins and by and large capacity in multi-subunit protein edifices.
7. They may tie legitimately to uncommon “promoter” locales of DNA, which lie upstream of the coding area in a quality, or straightforwardly to the RNA polymerase atom.