Biology Final Vocabulary

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Across
  1. 2. helix a spiral staircase
  2. 6. drift the change in frequency of an allele
  3. 7. carries genetic information
  4. 9. the genetic makeup of an organism
  5. 11. a gene location with two different alleles
  6. 14. the passing of characteristics to offspring
  7. 16. one of two identical strands of a chromosome
  8. 18. a genetic change that helps an organism survive
  9. 22. alternative forms of a gene
  10. 23. another word for characteristic
  11. 24. the process when mRNA is synthesized
  12. 26. preserved remains of organisms from the past
  13. 27. type of cell division that results in producing gametes
  14. 28. a series of 3 nucleotides located on mRNA
Down
  1. 1. determines a trait
  2. 2. the allele that is expressed
  3. 3. identical alleles on homologous chromosomes
  4. 4. a protein that destroys toxins
  5. 5. carries instructions from the nucleus for protein synthesis
  6. 7. the process of making another copy of DNA
  7. 8. not able to be seen or noticed
  8. 10. isolation one population was physically separated into two
  9. 12. structure part of a body that no longer has a function
  10. 13. the rapid spread of a disease to a large number of people
  11. 15. cells that have half the usual number of chromosomes
  12. 17. the allele that is masked if it is paired with a dominant one
  13. 19. selection survival of the fittest
  14. 20. observable characteristics that are a result of an individuals genes
  15. 21. when a new species develops as a result of evolution
  16. 25. system cells that work together to protect the body