Biology Crossword

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Across
  1. 4. Can affect every codon in a particular genetic sequence
  2. 5. pairs with adenine
  3. 8. Mixes the food with gastric acid and breaks down the food
  4. 9. The strand which replicates in chunks 2words
  5. 10. untwists the helix
  6. 11. A change in the heritable characteristics of populations over generations
  7. 12. the enzyme that carries out the replication 2words
  8. 13. mRNA is sent to the cytoplasm, where it bonds with ribosomes
  9. 17. British naturalist who is best known for his contributions to evolutionary theory
  10. 18. removes metabolic and liquid toxic wastes as well as excess water from the organism
  11. 19. Pumps the blood throughout the body
  12. 23. pairs with guanine
  13. 24. What is the first step in transcription?
Down
  1. 1. The first strand, which replicates nucleotides one by one 2words
  2. 2. Errors in codons caused by changes in nucleotide bases
  3. 3. What is an enzyme that moves with the replication fork & synthesizes numerous RNA primers?
  4. 6. The change in nucleotide base has no outward effect 2words
  5. 7. produced in the salivary glands
  6. 9. produces urea and uric acid as a by-product of the breakdown of proteins
  7. 14. an inherited characteristic that becomes prevalent because it provides an advantage
  8. 15. The ability to survive to reproductive age, find a mate, and produce offspring
  9. 16. What is a single-stranded nucleic acid?
  10. 20. pairs with uracil
  11. 21. What is the sugar that RNA contains?
  12. 22. Where does the process of digestion begin?