mendal's puzzle

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Across
  1. 2. factors that control traits
  2. 5. an organism's physical appearance
  3. 7. physical characteristics of organisms
  4. 8. an organism with two identical alleles for a trait
  5. 10. allele whose trait is masked in the presence of a dominant allele
  6. 13. an organism with two different alleles for a trait
  7. 14. the different forms of a gene
Down
  1. 1. an organism's genetic make up
  2. 2. the scientific study of heredity
  3. 3. the letter that represents the dominant allele
  4. 4. an allele whose trait always shows up in the organism
  5. 5. chart used to show possible gene combinations
  6. 6. a number that describes how likely it is that an event will occur
  7. 9. the passing of traits from parent to offspring
  8. 11. a condition in which neither of two alleles of a gene is dominant or recessive
  9. 12. the letter that represents the recessive allele