A gene is a relatively short sequence of DNA that provides instructions for making a protein. Gene expression involves transcription of a DNA sequence into RNA, followed by translation of the RNA into an amino acid sequence of a protein.
Gene expression is a regulated process.
Changes in a DNA sequence are called mutations and can alter the resulting protein produced, causing changed protein function. Information to Know 1. The roles of ribosomes, mRNA and tRNA in protein synthesis 3. The effect of the degeneracy of the nucleotide code. How transcription differs from DNA replication.