General

• The flow of genetic info: DNA - transcription - mRNA - translation - POLYPEPTIDE
• The flow of dna can be stopped at transcription or translation
• Epistasis= inherited changes in DNA that dont involve a change in the base sequences
• Dna is wound around histones. When wound tightly the gene is turned off. When wound looseley the gene is turned on and can be transcribed
• acetylation turns genes on. It stimulates transcription
• Methylation turns genes off. It suppresses translation