Across
- 1. RNA molecule that carries copies of instructions for the assembly of amino acids into proteins from DNA to the rest of the cell
- 7. a virus that affects bacteria
- 8. group of three bases on a tRNA molecule that are complementary to an mRNA codon
- 10. sequence of DNA that is not involved in coding for a protein
- 13. Enzyme similar to DNA polymerase that binds to DNA and separates the DNA strands during transcription
- 17. The enzyme that acts to rebuild or copy the new strands along the side of the DNA helix during replication
- 18. type of RNA that makes up the major part of ribosomes
- 19. protein molecule around which DNA is tightly coiled in chromatin
- 20. type of RNA molecule that transfers amino acids to ribosomes during protein synthesis
Down
- 2. in each new DNA double helix, one strand is from the original molecule, and one strand is new
- 3. A change in a gene or chromosome.
- 4. (genetics) the organic process whereby the DNA sequence in a gene is copied into mRNA
- 5. expressed sequence of DNA; codes for a protein
- 6. specific region of a gene where RNA polymerase can bind and begin transcription
- 9. monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
- 11. principle that bonds in DNA can form only between adenine and thymine and between guanine and cytosine
- 12. condition in which an organism has extra sets of chromosomes
- 14. A specific sequence of three adjacent bases on a strand of DNA or RNA that provides genetic code information for a particular amino acid
- 15. A segment of DNA on a chromosome that codes for a specific trait
- 16. Clusters of DNA, RNA, and proteins in the nucleus of a cell