Chapter 8 Vocab

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Across
  1. 3. An organism's genetic makeup or alleles.
  2. 6. The allele whose trait always shows up in the organism when it is present.
  3. 7. When three or more possible alleles determine the trait.
  4. 11. When more than one gene affects a trait.
  5. 12. The allele hidden when the dominant allele is present.
  6. 14. When one allele is only partially dominant.
  7. 16. An organism that has two different alleles for a trait.
  8. 17. The scientific study of heredity.
Down
  1. 1. When both alleles for a gene are expressed equally.
  2. 2. The number that describes how likely the occurrence of an event is.
  3. 4. The offspring of many generations of organisms that have the same form of a trait.
  4. 5. An organism's physical appearance.
  5. 8. An organism with two different alleles for a trait.
  6. 9. The passing of physical characteristics from parents to offspring.
  7. 10. The different forms of a gene.
  8. 13. An organism that has two identical alleles for a trait.
  9. 15. Word used by scientists to describe the factors that control a trait.
  10. 18. Each specific characteristic of an organism.