What is the process by which DNA gene sequences are copied into mRNA?

What is the process by which DNA gene sequences are copied into mRNA?

• A. Transcription
• B. Replication
• C. Translation
• D. Translocation

Answer: (A)

Copying a DNA gene sequence into an RNA molecule is transcription. During transcription, RNA polymerase reads the DNA template and builds a complementary RNA strand in the 5' to 3' direction, using ribonucleotides and replacing thymine with uracil. The resulting RNA transcript reflects the gene’s sequence and, in eukaryotes, is processed into messenger RNA before being used to make proteins. This is different from replication, which duplicates DNA itself; from translation, which uses RNA to synthesize proteins; and from translocation, a movement step that occurs during translation rather than copying DNA into RNA.

Copying a DNA gene sequence into an RNA molecule is transcription. During transcription, RNA polymerase reads the DNA template and builds a complementary RNA strand in the 5' to 3' direction, using ribonucleotides and replacing thymine with uracil. The resulting RNA transcript reflects the gene’s sequence and, in eukaryotes, is processed into messenger RNA before being used to make proteins. This is different from replication, which duplicates DNA itself; from translation, which uses RNA to synthesize proteins; and from translocation, a movement step that occurs during translation rather than copying DNA into RNA.