Genetics crossword

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Across
  1. 5. The last name of the father of genetics
  2. 6. The unit of heredity passed from parents to offsprings
  3. 8. An allele that is hidden in a heterozygous phenotype
  4. 9. 2 different alleles
  5. 10. Physical expression of a gene
  6. 12. A diagram used for the study of inheritance to show the predicted genotypes of offsprings
Down
  1. 1. Different forms of a gene
  2. 2. The graphic representation of genetic inheritance
  3. 3. The study of heredity
  4. 4. When the gene for a trait is carried on the x chromosome
  5. 7. Genetic makeup in letters
  6. 9. 2 of the same alleles
  7. 11. An allele that is fully expressed in the phenotype