Molecular Basis of Inheritance Question 56

56. Which one of the following is wrongly matched?

[2014]

(a) Transcription - Writing information from DNA to tRNA.

(b) Translation-Using information in mRNA to make protein

(c) Repressor protein - Binds to operator to stop enzyme synthesis.

(d) Operon - Structural genes, operator and promoter.

Show Answer

Answer : a

Hints & Solution

(a) Process of copying genetic information from DNA to RNA is called transcription. At a time only one DNA strand is being transcribed into RNA. The strand of DNA with polarity $3^{\prime} \to 5^{\prime}$ ‘act as template strand and the DNA strand with polarity $5^{\prime} \to 3^{\prime}$ act as coding strand.