1					2
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										4					5				6
	7	8		9									10		11						12
								13											14
						15
16																			17				18
					19							20
										21
		22										23		24
25
												26
				27
	28
29											30

Across 6. helps the mRNA and tRNA assemble the amino acids 7. scientist who discovered the base pair rule that A bonds with T and C bonds with G 11. belief and practice of improving the genetic quality of the human population by increasing the reproduction of people with desired traits 14. an organism that is genetically identical to the parent organism (Dolly the Sheep) 15. DNA base with a single ring structure like cytosine, thymine, and uracil 20. enzyme involved in DNA replication that joins individual nucleotides to produce a DNA molecule 22. transfer the DNA code from the nucleus to the ribosome 24. type of mutation in which a new letter is added or a letter is deleted from DNA 25. the process of copying DNA to make more DNA 26. made of a sugar, phosphate, and a base 27. a block of 3 mRNA bases 28. (2 words) what the abbreviation DNA stands for 29. scientist who worked with Crick to make the first double helix model of DNA 30. block of 3 tRNA bases

Down 1. type of bond that occurs between the base pairs in DNA 2. brings the correct amino acid to the ribosome 3. DNA base with a double ring structure like adenine and guanine 4. the protein factory in a cell 5. DNA base that bonds with thymine in DNA 8. (3 words) scientific research project that had the goal of determining the entire sequence of base pairs in human DNA 9. the name of the sugar found in RNA 10. the base found in RNA instead of thymine 12. DNA base that bonds with guanine in DNA 13. the process of using mRNA to make a protein 16. made up of many repeating single units (monomers) 17. the process of copying the instructions contained in DNA to make mRNA 18. any change to an organisms DNA 19. molecule in cells that contains the information to build proteins 21. female scientist who used x-ray diffraction to produce an image of DNA 23. type of mutation in which there is a change to only one letter or base in a DNA molecule