DNA and Genes: The Blueprint Inside Every Cell

  1. Instruction Manual: DNA holds the coded recipe for your entire body.
  2. Four-Letter Alphabet: Just A, T, C, and G create billions of genetic combinations.
  3. Gene Messages: Portions of DNA act as instructions for building proteins.
  4. Identical Copies: Almost every cell holds the exact same DNA sequence.
  5. Massive Storage: One cell’s DNA would stretch six feet if uncoiled.
  6. Error Checkers: Cells constantly monitor DNA for mistakes.
  7. Passed Down: Half your DNA comes from each parent.
  8. Unique Mix: No two people have the same genetic code—except identical twins.
  9. Hidden Switches: Genes can turn on or off based on your environment.
  10. Blueprint for Life: DNA guides growth, health, and even how you respond to stress.