Question

1. The following base sequence corresponds to the strand of DNA which is transcribed into mRNA. [Level 1-2] a) Complete the base sequence of RNA ....TAG-CTA-GGC-CCT-CAT-GAA-....​

Answer 1

According to the DNA base sequence shown above, the RNA base sequence will be AUG-GAU-CCg-GGA-GUA-CUU.

What are the nitrogenous bases in DNA and RNA?

• In DNA, the nitrogenous bases are adenine, thymine, cytosine, and guanine.
• In RNA, the nitrogenous bases are adenine, uracil, guanine, and cytosine.

The RNA strand is formed using the nitrogenous bases of DNA as a template. The RNA strand is based on the parity between nitrogenous bases. Therefore, when DNA presents an Adenine, RNA presents a uracil, when DNA presents Thymine, RNA presents Adenine. When DNA presents a guanine, RNA presents cytosine, and vice versa.