Scientist and their contribution

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Across
  1. 2. Known for discovering penicillin
  2. 4. discovered X-rays
  3. 6. Major discovered radioactivity and won two Nobel Prizes
  4. 10. Proposed the law of inheritance and is known as the father of genetics
  5. 14. Discovered the structure of DNA with James Watson
  6. 15. Developed the theory of evolution by natural selection
Down
  1. 1. pioneered the study of vaccination and rabies treatment
  2. 3. developed the heliocentric model of the solar system
  3. 5. known for discovering the law of conservation of mass
  4. 7. is famous for the periodic table of elements
  5. 8. the first person to walk on the Moon
  6. 9. discovered the law of gravity after observing a falling apple
  7. 11. known for work on the classification of organisms and is called the father of taxonomy
  8. 12. Formulated the laws of motion and universal gravitation
  9. 13. known for the theory of relativity