science crossword

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Across
  1. 1. a characteristic that all members of a species have
  2. 2. version: a specific form of a gene that provides instructions for making a particular protein molecule
  3. 5. when a male and a female reproductive cell combine to create an offspring
  4. 6. having gene versions that are different
  5. 7. to receive genes from a parent
  6. 9. having gene versions that are the same
Down
  1. 1. how something works
  2. 3. an instruction for making a protein molecule
  3. 4. a type of molecule that genes and chromosomes are made of
  4. 8. a long piece of DNA that contains many genes