RNA is to U(Uracil) as DNA is to ?
a. Cytosine (don't think so)
b. Guanine (don't think so)
c. Thymine
d. Adenine
You can find your answer at the following site.
http://en.wikipedia.org/wiki/Uracil_in_DNA
I read the article already, but I don't understand what is the answer. I am not sure if the question is referring to the the complementary base or something?
To determine the correct answer, we need to compare RNA and DNA in terms of their components. RNA (Ribonucleic acid) molecules are made up of a sugar called ribose, a phosphate group, and a nitrogenous base. In RNA, instead of thymine (T), RNA contains the nitrogenous base uracil (U).
DNA (Deoxyribonucleic acid) is also composed of a sugar (deoxyribose), a phosphate group, and a nitrogenous base. However, DNA differs from RNA in that it contains the nitrogenous base thymine (T) instead of uracil (U).
Therefore, the correct answer is c. Thymine, as it is the nitrogenous base found in DNA molecules.