DNA - Transcription

Question 1

transcription

Answer 1

• the synthesis of mRNA from a DNA template
• mRNA = messenger
• only one strand of DNA is copied
• a single gene may be transcribed thousands of times
• after transcription, the DNA strands rejoin
• DNA unwinds
• RNA polymerase recognizes a specific base sequence in the DNA called a promoter and binds to it (separates DNA)
• complementary bases are assembled
• Uracil (U) replaces thymine (T) in RNA
• in RNA U-A
• RNA is a single strand of nucleotides