Question

which of the following difference between dna and rna allows them to perform their unique functions?
dna contains ribose, while rna contains deoxyribose.
dna is single - stranded, whereas rna is double - stranded.
dna contains thymine, while rna contains uracil.
rna is found only in the nucleus, while dna is found only in the cytoplasm.

Explanation:

DNA has deoxyribose sugar and thymine, while RNA has ribose sugar and uracil instead of thymine. DNA is usually double - stranded and mainly in the nucleus, and RNA is usually single - stranded and can be in both nucleus and cytoplasm. The difference in nitrogenous bases (thymine in DNA and uracil in RNA) is crucial for their distinct functions in genetic information storage and transfer.

Answer:

C. DNA contains thymine, while RNA contains uracil.