Final answer:
Codon-anticodon pairing in the context of protein synthesis occurs in an antiparallel fashion, which ensures that the complementary sequences of DNA and RNA align correctly to produce accurate proteins.
Step-by-step explanation:
Codon-anticodon pairing occurs when the complementary trinucleotide sequence elements align in an antiparallel fashion. This means that the two sequences are oriented in opposite directions. Specifically, the first base of the codon (5' → 3') pairs with the third base of the anticodon (3' → 5'). This antiparallel pairing is essential for accurate protein synthesis as it ensures that the correct amino acids are brought together during translation. For example, if a DNA strand contains the sequence 5'-ATTCCGGATCGA-3', the sequence of the complementary strand of DNA will be 3'-TAAGGCCTAGCT-5', following the rules of complementary base pairing where adenine (A) pairs with thymine (T) and cytosine (C) pairs with guanine (G).