<Tr> <Th_colspan="2"> U </Th> <Th_colspan="2"> </Th> <Th_colspan="2"> </Th> <Th_colspan="2"> </Th> </Tr> <Tr> <Th> U </Th> <Td> UUU </Td> <Td> (Phe / F) Phenylalanine </Td> <Td> UCU </Td> <Td> (Ser / S) Serine </Td> <Td> UAU </Td> <Td> (Tyr / Y) Tyrosine </Td> <Td> UGU </Td> <Td> (Cys / C) Cysteine </Td> <Th> U </Th> </Tr> <Tr> <Td> UUC </Td> <Td> UCC </Td> <Td> UAC </Td> <Td> UGC </Td> <Th> </Th> </Tr> <Tr> <Td> UUA </Td> <Td> (Leu / L) Leucine </Td> <Td> UCA </Td> <Td> UAA </Td> <Td> Stop (Ochre) </Td> <Td> UGA </Td> <Td> Stop (Opal) </Td> <Th> </Th> </Tr>

Which of the following is the normal start codon for protein synthesis