Genetics Revision

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Across
  1. 4. where is all the genetic information stored?
  2. 5. Where is the DNA found in a plant cell?
  3. 6. a scientist, who came up with the theory of evolution
Down
  1. 1. what are the differences between the same species called ?
  2. 2. what happens when all the organisms of a species die out
  3. 3. what are the remains of animals from millions of years ago called