Question

what is meant by transcription

Answer 1

• Transcription is a process through which a segment of DNA is copied into RNA by the action of enzyme RNA polymerase.

• The process is somewhat similar as DNA replication where one of the strands acts as DNA template.

• The synthesis of RNA also occurs in 5’ – 3’ direction.

• At first unwinding of DNA takes place to expose the bases of 3’ – 5’ DNA template by the action of RNA polymerase enzyme.

• A region called promoter region is the point from where the RNA synthesis takes place.

• Nucleotides with bases U,C,A and G are involved in the process.

• The sequences of nucleotides in the newly prepared RNA strand will be determined by the presence of nucleotide sequences in the template DNA (complementary – A in DNA determines U in RNA).

• Several RNA molecules can be created from a single DNA strand according to the need.

• In eukaryotes there are different RNA polymerases to synthesis different types of RNA like rRNA, tRNA, mRNA etc.

Hope it helps

Answer 2

Answer:

A act or process of representing something in a written or printed form is called transcription.

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