Question

The enzyme involved in transcription is
A. RNA Polymerase
B. DNA Polymerase I
C. DNA Polymerase II
D. DNA Polymerase III

Answer 1

Hint: Transcription process involves the changing of the DNA from Double stranded to single stranded pattern and the formation of RNA which is done by copying the two strands of the DNA fragment separately. The enzyme involved should be morphologically similar to the substrate it is working upon.

Complete answer:
The process of transcription is very important for the synthesis of proteins. We all clearly know that DNA is the genetic material for all living beings and this genetic material gets translated into various proteins and thus helps in the regulation of gene expression of the body. The process of multiplication of the DNA on its own is known as Replication, DNA getting changed into RNA is called transcription and when this RNA gets translated into the protein it is known as translation.

During the replication of DNA, the synthesis of the fragments of DNA takes place from the parent strands in a tuning fork like manner and the enzymes involved in the replication are basically enzymes which are having a certain relation with the DNA and they are DNA polymerase enzymes which help in elongation and multiplication of the bases of the DNA fragment. All the options given to us are responsible for playing a major role in the replication process and they do not have any impact on the transcription process.
During the process of transcription, the single strand of the DNA is taken into consideration and it is read in the opposite direction resulting in the formation of the fragment of the RNA molecule. The enzyme responsible for proper transcription is the RNA polymerase. The RNA polymerase smoothly transcribes the bases of the DNA fragment and assembles them in the RNA frame.

So the correct answer is option A, RNA polymerase.

Note: The mutations, which are responsible for causing the genetic diseases, happen because of the errors in the transformation of DNA to proteins. Any nucleotide base if read incorrectly then its transcription will be different and also due to it the translation into protein will also differ from a normal translated protein and hence causing abnormalities.