BI 112 CH13

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Across
  1. 3. Strand that receives 1 RNA primer. It is continuously extended from the primer by a DNA polymerase.
  2. 4. Fragments from the lagging strand
  3. 6. The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand.
  4. 7. Specialized form of RNA polymerase that synthesizes a short RNA sequence needed to start DNA replication
  5. 11. Is required to link the sugar-phosphate backbone between two adjacent Okazaki fragments.
  6. 14. DNA replication is said to be this because each of the 2 daughter cell molecules will have one old parental strand and one newly synthesised strand.
  7. 16. Synthesizes a new DNA strand by matching existing nucleotides with complimentary ones
  8. 17. _______ principal shows that a change in genotype and phenotype can be due to assimilation of foreign DNA
  9. 19. Separates hydrogen bonds between the DNA strands (= unwinds the double helix)
  10. 20. The nucleotides in RNA
  11. 22. Deduced Adenine and Thymine content is equal, and Guanine and Cytosine content is also equal in the genome
  12. 23. Enzyme that catalyzes the lengthening of telomeres in germ cells.
  13. 24. Little caps on the end of chromosomes. Important because they postpone the shortening of the chromosomes.
  14. 25. Strand that receives several RNA primers, extended discontinuously from each primer forming okazaki fragments
Down
  1. 1. Enzyme that synthesizes the primer
  2. 2. Relieves strain due to unwinding ahead of the replication fork
  3. 5. Uncoiled loosely packed form of chromatin and are generally active.
  4. 8. Type of protein that stabilizes the separated DNA template strands until the new complementary strand is synthesized
  5. 9. Provided conclusive evidence that DNA is the genetic material by working with bacterial cells and T2 bacteriophages (viruses).(2 name)
  6. 10. A tightly packed form of DNA/condensed DNA.
  7. 12. Discovered the phenomenon of transformation working with mice and Streptococcus pneumoniae.
  8. 13. Deciphered the DNA double helix structure by taking into account discoveries from other contemporary scientists.(2 people)
  9. 15. A structure that consists of a segment of DNA wound around histone proteins (Thread wrapped around a spool)
  10. 18. the nucleotides in DNA
  11. 21. Took the X-ray diffraction image of DNA that showed DNA is a double helix.