AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

RECOMBINANT DNA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which folowing process is catalyzed by a reverse transcriptase?
A
DNA to mRNA
B
DNA to cDNA
C
mRNA to DNA
D
cDNA to mRNA
Explanation: 

Detailed explanation-1: -The reverse transcriptase catalyzes the conversion of RNA template molecules into a DNA double helix and provides a very useful tool for molecular biology research.

Detailed explanation-2: -(C) Telomerase reverse transcriptase (TERT) uses RNA as a template to elongate and maintain eukaryotic chromosome ends. (D) Reverse transcription is an intermediate step in the formation of multicopy single-stranded DNA (msDNA) in bacteria.

Detailed explanation-3: -By using reverse transcriptase, retro virus incorporate their genetic material into host’s genetic material. So, the correct answer is ‘Transcribes viral RNA to cDNA’.

Detailed explanation-4: -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).

There is 1 question to complete.