Here is a more detailed look at the process of transcription and translation:
Transcription:
1. The DNA double helix unwinds, and the two strands separate.
2. RNA polymerase, an enzyme, binds to the DNA at a specific location called the promoter.
3. RNA polymerase reads the DNA sequence, one nucleotide at a time, and synthesizes a complementary RNA molecule.
4. The RNA molecule, called messenger RNA (mRNA), is released from the DNA and travels out of the nucleus into the cytoplasm.
Translation:
1. The mRNA molecule binds to a ribosome in the cytoplasm.
2. Transfer RNA (tRNA) molecules, each carrying a specific amino acid, bind to the mRNA molecule according to the genetic code.
3. The ribosome reads the mRNA sequence, three nucleotides at a time, and links together the amino acids carried by the tRNA molecules.
4. The chain of amino acids folds into a protein with a specific structure and function.