Biology Final Exam Key Term

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Across
  1. 2. only expressed with two copies of the alleles
  2. 4. transfers amino acids to the growing protein chain
  3. 5. relative ability to survive and reproduce
  4. 8. mutations that occur in body cells
  5. 10. the expression of an organism's traits/it's physical appearance
  6. 11. different versions of gene
  7. 12. mutations that occur in gametes
  8. 13. two different alleles
  9. 17. always expressed alleles
  10. 18. carries genetic message from the nucleus to the ribosome
  11. 19. theory established by charles darwin that states inherited traits of organisms change over time
Down
  1. 1. Nitrogen base that pairs with thymine or uracil
  2. 2. helps make ribosomes
  3. 3. Nitrogen base that pairs with cytosine
  4. 6. occurs when there are differences in fitness among members of a population
  5. 7. coiled structures of DNA and Proteins
  6. 9. two of the same alleles
  7. 14. the alleles an individual inherits
  8. 15. unit of evolution
  9. 16. the genetic material in your cells