SCIENCE

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Across
  1. 2. how the traits appear, or are expressed.
  2. 3. when an organism's genotype has two identical alleles for a trait.
  3. 4. a genetic factor that is blocked by the presence of a dominant factor.
  4. 7. a gene that more than two alleles
  5. 9. a genetic factor that blocks another genetic factor
  6. 11. shows the probability of all possible genotypes.
  7. 12. when the allele for a trait is on an X or Y chromosome.
  8. 13. a cross between two individuals that are hybrids for one trait.
  9. 14. the genetic material of an organism is modified by inserting DNA from another organism.
  10. 16. when multiple genes determine the phenotype of a trait.
  11. 17. when an organism's genotype has two different alleles for a trait.
  12. 18. shows genetic traits that were inherited by mebers of a family.
  13. 19. a distinguishing characteristic of an organism
Down
  1. 1. when both alleles can be independetely observed in a phenotype.
  2. 5. the selection and breeding of organisms for desired traits
  3. 6. is any permanent change in the sequence of DNA in a gen or a chromosome of a cell.
  4. 8. when an offspring's phenotype is a combination of its parents phenotypes.
  5. 10. is the study of how traits pass from parents to offspring
  6. 14. the alleles of al the genes on an organism's chromosomes.
  7. 15. is the passing of traits from parents to offspring