A journey through time

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Across
  1. 1. What Animal did Ian Wilmut clone?
  2. 3. What did Alexander Fleming see on one specific dish?
  3. 4. What was the technique used by James Watson and Francis Crick that led to the discovery of the DNA structure?
  4. 5. Which scientists discovered the double helix in the DNA molecule?
Down
  1. 1. Which Scientist helped kill microorganisms in alcohol and silk industry
  2. 2. What was the purpose of Alfred Hershy and Martha Chase's discovery on bacteriophages?