Final answer:
The correct complementary DNA sequence to the given strand 'G T A A T C G G C G C A T T T C' is option B 'C G C G T A A T T T A G C C G A', as it adheres to the rules of complementary base pairing and antiparallel strand orientation.
Step-by-step explanation:
The student has been provided with a sequence of DNA bases and is asked to identify the complementary sequence that would pair with it to complete the DNA helix. DNA consists of two strands that form a double helix, with bases pairing in a specific way due to complementary base pairing. According to the rules of base pairing, adenine (A) pairs with thymine (T) and cytosine (C) pairs with guanine (G).
In this case, the given sequence is 'G T A A T C G G C G C A T T T C' and we must match it with the correct complementary strand. The sequence of the complementary strand will be the reverse of 'C A A A T G C C G C G T A A T G' (keeping in mind that the strands are antiparallel), which gives us '3'-AGGTACTCAACT-5' as the proper base pairing.
Option B, 'C G C G T A A T T T A G C C G A', is the correct match for the sequence because it features the correct complementary base pairs, oriented in the appropriate antiparallel direction.