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.

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

answer; aerobic conditions; citric acid cycle (krebs cycle) electron transport chain;         anaerobic conditions; fermentation; both glycolysis;