Here's why:
* Reverse transcriptase is an enzyme that synthesizes DNA from an RNA template. This process is the reverse of normal transcription, hence the name.
* mRNA (messenger RNA) carries the genetic code from DNA to the ribosomes where protein synthesis occurs.
* cDNA is a DNA copy of an mRNA sequence. It lacks introns (non-coding regions) present in the original gene, making it easier to study and manipulate.
The process:
1. Reverse transcriptase binds to the mRNA and uses it as a template.
2. It adds nucleotides one by one, creating a complementary DNA strand to the mRNA.
3. The resulting cDNA can then be used for various purposes, such as gene cloning, gene expression analysis, or protein production.
In summary: Reverse transcriptase is used to convert mRNA into cDNA, which is a valuable tool for studying and manipulating genes.
