Genetics Vocabulary

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Across
  1. 3. The likelihood of a genetic outcome.
  2. 4. The physical appearance of a trait (e.g., brown eyes).
  3. 5. Having two different alleles for a trait (e.g., Bb).
  4. 6. A pair of chemical building blocks in DNA (A pairs with T, C pairs with G).
  5. 8. When both alleles in a pair are expressed equally (e.g., AB blood type).
  6. 9. The molecule that contains genetic information.
  7. 10. The genetic makeup of an organism (e.g., Bb or bb).
  8. 11. A version of a gene, such as dominant or recessive.
  9. 15. A change in the DNA sequence that can affect traits.
  10. 16. A structure in the cell's nucleus that contains DNA.
  11. 19. A chart that shows family relationships and how traits are inherited.
  12. 20. All the genetic material of an organism.
  13. 21. The part of the cell that holds chromosomes.
Down
  1. 1. When neither allele is completely dominant, resulting in a blend of traits.
  2. 2. An allele that is hidden by a dominant allele.
  3. 7. A chart used to predict the genetic outcomes of a cross.
  4. 8. An individual who has one recessive allele for a trait but does not show the trait.
  5. 12. A characteristic, such as eye color or height, passed from parents to offspring.
  6. 13. Having two identical alleles for a trait (e.g., BB or bb).
  7. 14. An allele that hides the presence of a recessive allele in a trait.
  8. 17. The passing of traits from parents to offspring.
  9. 18. A segment of DNA that determines a specific trait.