1		2		3
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		7				8
				9										10
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12								13
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16											17
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			19
		20			21
			22

Across 4. A specific sequence of 3 bases on the mRNA that signals the end of protein synthesis (2 Words) 6. The base that pairs with guanine 9. The base that pairs with adenine 11. Thread like structures made of coiled DNA 14. A sequence of 3 bases on RNA that codes for a specific amino acid 16. The nitrogenous base component of nucleotides that always pairs with thymine to form the double helix 17. The basic monomer of DNA 18. A specific sequence of 3 bases on the mRNA that signals the ribosome to start translating the genetic code (2 Words) 19. The DNA code of a specific gene is copied into an mRNA molecule 20. A strong chemical bond between amino acids (2 Words) 22. The genetic material found in the nucleus of cells

Down 1. A sequence of 3 bases on tRNA that is complementary to the mRNA codon 2. A specific sequence of DNA that codes for a protein 3. Organelle where translation takes place 5. The sequence of these determine the order of amino acids in a protein 7. The base that always pairs with cytosine 8. The bond between bases that holds the 2 strands of DNA together (2 Words) 9. The number of hydrogen bonds between A and T 10. An mRNA molecule is read by a ribosome to assemble a sequence of amino acids 12. A single strand which carries a complementary copy of a gene from the nucleus to ribosomes 13. Unzips the chromosome at a specific site so the gene can be copied (2 Words) 15. The building blocks of proteins (2 Words) 19. The number of hydrogen bonds between C and G 21. A specialised RNA molecule that transports specific amino acids to the ribosome during translation