Question

"the codons aaa, ccc, ggg, and uuu specify the amino acids lysine, proline, glycine, and phenylalanine, respectively. if the base sequence 5′-cccaaatttggg-3′ is present in the coding strand of a stretch of dna, what polypeptide sequence would be encoded by the corresponding template strand?"

Answer 1

Seeing as how A pairs with T and G pairs with C the complementary base sequence on the other strand of DNA would be 3'-gggtttaaaccc-5'. The pairing of the polypeptide strand always follows this rule. There are additional mechanisms in place to fix any errors.