[Campbell Biology P.363] The 'Study Tip' provides a single-stranded DNA sequence: TCAGCGTAAG... | Practice Question

The 'Study Tip' provides a single-stranded DNA sequence: TCAGCGTAAGGTGATGTATA.... If the segment 'TCAGCG' from this strand were to serve as a template for DNA replication, what would be the complementary sequence synthesized?

  • A: UGAGCA
  • B: GACTGC
  • C: AGCGTC
  • D: AGTCGC

Explanation

In DNA, adenine A pairs with thymine T , and guanine G pairs with cytosine C . Applying these rules to the template segment 'TCAGCG': T pairs with A, C with G, A with T, G with C, C with G, and G with C. Therefore, the complementary sequence is 'AGTCGC'.