A-Level Biology OCR A
Dna Strand Gene Sense Mrna Complementary Ribonucleotides Transcribed
| Front |
Describe the process of transcription in bullet points. |
| Back |
Transcription:- Section of DNA that contains the gene is unwound by DNA helicase at the start of the gene
- RNA polymerase adds the free complementary ribonucleotides to the template (antisense) strand
- Sense strand of DNA contains the triplet code in correct order but is not transcribed
- Antisense strand of DNA is complementary to the sense strand and is transcribed to make mRNA which is a copy of the sense strand
- Ribonucleotides are joined together by condensation (phosphodiester bonds) to form a copy of the gene in the form of mRNA
- When the whole gene was transcribed, mRNA separates from DNA and leaves the nucleus through the nuclear pores
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A-Level Biology OCR A