Chapter 8

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Across
  1. 2. the passing of physical characteristics to offspring
  2. 4. the scientific study of heredity
  3. 5. the factors that control a trait.
  4. 7. An organism that has two identical alleles for a trait
  5. 8. an organism with two different alleles for a trait
  6. 10. the different forms of a gene.
  7. 11. occurs when both alleles for a gene are expressed equally.
  8. 12. a chart that shows all the possible ways alleles can combine in a genetic cross
  9. 13. An organism that has two different alleles for a trait
  10. 14. an organism's physical appearance
Down
  1. 1. a number that describes how likely it is that an event will occur.
  2. 3. hidden whenever the dominant allele is present
  3. 6. the offspring of many generations that have the same form of a trait
  4. 9. one whose trait always shows up in the organism when the allele is present