Question

If base sequence in m-RNA is $5$' UAC GUA CGU ACG UAC GUA CGU ACG $3$' then what will be sequence of template strand?

• A. $5$' CGT ACG TAC GTA CGT ACG TAC GTA $3$'
• B. $5$' TAC GTA CGT ACG TAC GTA CGT ACG $3$'
• C. $5$' ATG CAT GCA TGC ATG CAT GCA TGC $3$'
• D. $5$' GTA TAC ACG TGC GTA GTA CAG GCA $3$'

Answer 1

Answer: (A)

$5$' CGT ACG TAC GTA CGT ACG TAC GTA $3$'

Template strand is always complimentary to coding strand. A linked with T and U (in case of RNA) with double Hydrogen bonds and G links with C with triple Hydrogen bonds. So according to this the sequence of template strand will be- 5'CGT ACG TAC GTA CGT ACG TAC GTA 3'.