Biology: DNA and Genetics

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Across
  1. 5. DNA codes for RNA, which guides the synthesis of proteins.
  2. 7. The enzyme responsible for the second step of DNA replication.
  3. 9. Permanent changes in a cells' DNA.
  4. 13. A mutation only affecting one or a few nucleotides.
  5. 16. rules Adenine with Thymine, Cytosine with Guanine.
  6. 18. A subunit of nucleic acid made of a simple sugar, phosphate group, and nitrogen base.
Down
  1. 1. Twisted ladder shape of DNA.
  2. 2. When DNA makes a copy of itself.
  3. 3. RNA that carries genetic information from DNA to direct protein synthesis.
  4. 4. A genetic mutation caused by deletions of a number of nucleotides
  5. 6. mRNA is attached to ribosomes and a protein is made.
  6. 8. RNA that associates with proteins to form ribosomes.
  7. 10. RNA that transports amino acids to ribosomes.
  8. 11. RiboNucleic acid.
  9. 12. Codon Three codons that are not specific for an amino acid.
  10. 14. mRNA is synthesized from template DNA.
  11. 15. Three-base coding sequence.
  12. 17. Triple-base code in DNA or RNA.