Unit 3 Revision Biology

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Across
  1. 1. abnormal chromosome number
  2. 9. DNA/chromosome section copied twice
  3. 10. mutation with no protein change in the phenotype
  4. 11. insertion/deletion shifts reading frame
  5. 12. extra copy of one chromosome
  6. 14. DNA that does not code for proteins
  7. 15. one base changed in DNA
  8. 19. chromosome piece moves to another chromosome
  9. 21. short DNA fragments on lagging strand
  10. 22. coding section kept in mRNA
  11. 24. agent that causes mutations
  12. 25. chromosome segment flips around
Down
  1. 2. type of point mutation that may lead to a frameshift mutation
  2. 3. region upstream of DNA where RNA polymerase binds
  3. 4. enzyme that separates DNA strands
  4. 5. mRNA end helping stability/export
  5. 6. mutation in this cell type will not be inherited to offspring
  6. 7. one nucleotide is swapped for another
  7. 8. tRNA bases matching mRNA codons
  8. 13. stage where chromosomes separate
  9. 16. permenant change in DNA sequence
  10. 17. second most common outcome of a mutation
  11. 18. chromosomes fail to separate properly
  12. 20. enzyme that seals DNA
  13. 23. type of physical mutagen that damages DNA