Genetics crossword

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Across
  1. 1. one small and one big letter
  2. 4. building blocks of life
  3. 6. similar
  4. 8. not phenotype
  5. 9. shows square of multiple squares
  6. 10. both big letters
  7. 11. form of gene
  8. 12. physical appearance
Down
  1. 2. not dominant
  2. 3. not genotype
  3. 4. rules over recessive
  4. 5. chance
  5. 7. opposite
  6. 8. carry information on the traits
  7. 13. two small letters