how are traits inherited?

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Across
  1. 2. the study of how traits pass from parents to offspring
  2. 5. a genetic factor that blocks another genetic factor
  3. 7. the alleles of all the genes on an organisms chromosomes make up the organisms..
  4. 9. when an organisms genotype has two different alleles for a trait it is called..
Down
  1. 1. a genetic factor that is blocked by the presence of a dominant factor
  2. 3. the selection and breeding of organisms for desired traits
  3. 4. how the traits appear or are expressed is the organisms..
  4. 6. the passing of traits from parents to offspring
  5. 8. when an organisms genotype has two identical alleles for a trait it is called..