Question

One strand of the given DNA segment codes for mRNA having the sequence AUC GCG UCA for the synthesis of protein. Which DNA strand is responsible for the above mRNA sequence ________________.

• A. ATC-TAG
  GCC-GGC
  ATU-TAG
• B. TAG-ATC
  CGC-GCG
  AGT-TCA
• C. TGA-ACT
  CGC-GCG
  TAG-ATC
• D. AGA-TCT
  GCG-CGC
  GAT-CTA

Answer 1

The correct option is A ATC-TAG

GCC-GGC
ATU-TAG
As we know DNA contain Adenine, Thymine, Guanine, Cytosine where A binds with T and G binds with C by hydrogen bonds while in case of RNA only Uracil replaces Thymine which A binds with U and G binds with C.
So, the correct option is option B.