NEET BIOLOGY

Detailed explanation-1: -So, the correct answer is ‘cDNA’.

Detailed explanation-2: -Synthesis of DNA from RNA is called reverse transcription. It occurs in retroviruses. The enzyme responsible for the synthesis of DNA from RNA is reverse transcriptase. DNA dependent RNA polymerase forms RNA from DNA, i.e., a DNA strand acts as the template to synthesise a new single stranded RNA.

Detailed explanation-3: -RNA is synthesized on a DNA template by a process of DNA transcription in which RNA polymerase enzymes make an RNA copy of a DNA sequence. RNA polymerases are formed from multiple polypeptide chains with a molecular weight of 500, 000. In eukaryotic cells there are three different types of RNA polymerases.

Detailed explanation-4: -Listen to pronunciation. (ree-VERS tran-SKRIP-shun) In biology, the process in cells by which an enzyme makes a copy of DNA from RNA. The enzyme that makes the DNA copy is called reverse transcriptase and is found in retroviruses, such as the human immunodeficiency virus (HIV).

Detailed explanation-5: -Genes encoding reverse transcriptases (RTs) are found in most eukaryotes, often as a component of retrotransposons, as well as in retroviruses and in prokaryotic retroelements.