What is the purpose of transcription ?

Because its the first step ti a gene expression.

Transcription factors are proteins that regulate the transcription of genes—that is, their copying into RNA, on the way to making a protein. The human body contains many transcription factors.

The main purpose of transcription is the production of different RNA molecules for the formation of proteins.

Explanation:

Transcription may be defined as the process of formation of RNA molecules from the complementary DNA molecule. Three different types of RNA are messenger RNA, ribosomal RNA and transfer RNA.

The RNA molecules are necessary for the process of gene expression. The information for the protein synthesis is stored in the RNA molecule. The first step of translation depends on the RNA molecules.

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

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