Question

which represents a strand of rna bases?
caaggtctctc
aggttcacaca
caaggucucu
tgggaactca

Explanation:

RNA (ribonucleic acid) contains the nitrogenous base uracil (U) instead of thymine (T) which is present in DNA. So, we need to check each option for the presence of U.

• Option 1: CAAGGTCTCTC - contains T (thymine), so it is not RNA.
• Option 2: AGGTTCACA - contains T (thymine), so it is not RNA.
• Option 3: CAAGGUCUCU - contains U (uracil), so it is RNA.
• Option 4: TGGAACTCA - contains T (thymine), so it is not RNA.

Answer:

C. CAAGGUCUCU