biology

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Across
  1. 2. short length of DNA found on a chrormosone that codes for aspecific protein
  2. 3. thread like structure of coiled DNA found in the nucleus
Down
  1. 1. Molecule carrying the genetic code shaped like a double heilix
  2. 2. the entire DNA of a organism
  3. 4. single strand molecule that helps turn DNA structure into proteins