Question

Sequence of nitrogen bases in nontemplate strand of DNA was found to be CAT GTT TAT CGC. What would be sequence of nitrogen basis in mRNA synthesised over the corresponding region of template strand _______________.

• A. CAU GUU UAU CGG
• B. CAA GAA TAU GCC
• C. GUA CAA AUA GCC
• D. GTA CAA ATA GCC

Answer 1

The correct option is A CAU GUU UAU CGG

Non-template strand CAT GTT TAT CGC

Template Strand GTA CAA ATA GCG

mRNA sequence CAU GUU UAU CGG

According to the charguff's rule in DNA the Adenine always pair with Thymine and Guanine always pair with Cytosine.

In RNA Thymine is not found so , Adenine will always form two hydrogen bond with Uracil.

Hence , the correct option is A.