- Each gene is a code for the primary structure of a polypeptide.
- Sequence of bases in DNA determines the sequence of amino acids in the polypeptide (made by ribosomes in the cytoplasm)
- DNA 'unzips' along the length of the gene.
- RNA Polymerase matches free RNA nucleotides complementary to the template strand.
- This follows base pairing rules.
- The other DNA strand has no part in the process.
Movement of mRNA to Ribosomes
- When transcription is finished, the mRNA molecules move from the DNA to the ribosome in the cytoplasm.
- In eukaryotes, mRNA moves from the nucleus where transcription occurs, through nuclear pores, to ribosomes.
Amino Acid Activation
- Enzymes attach amino acids to…