1		2					3		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
						31

Across 6. twisted ladder 8. these are made of genes 10. adenine and guanine 11. new strand of DNA saves one of the original strands 12. the sugar in mRNA 13. the nucleus is called these because it is in charge of everything in the cell 17. one of the substances that makes up the backbone of the DNA 18. thymine and cytosine 20. one of the two organelles that has its own DNA 23. A pairs with T and G pairs with C 26. used X-rays to look at DNA 28. if the original strand is TGGACCTGA, what would the new strand be 29. the nitrogen bases make up this part of the ladder 30. DNA is too big to fit through these 31. mRNA has this base that DNA does not

Down 1. pairs with thymine 2. consists of a N-base, a sugar, and a phosphate 3. what DNA stands for 4. one of the two organelles that has its own DNA 5. one of the substances that makes up the backbone of DNA 7. part of DNA that does code for a protein 9. these hold the two nitrogen bases together 14. organelle where proteins are made 15. replication occurs during this part of mitosis 16. DNA controls the production of these 19. DNA is a type of this because it was first found in the nucleus 20. pairs with guanine 21. mRNA has this many strands 22. determined the # of A=T and G=C 24. part of DNA that does not code for a protein 25. a segment of DNA that codes for a protein 27. the part of the backbone that the nitrogen bases attach to