Which Modified Nucleotide Base is Part of the 5' Cap

Question

Which modified nucleotide base is part of the 5' cap on eukaryotic mRNAs?
A)cytosine
B)guanine
C)adenine
D)uracil

Accepted Answer

The modified nucleotide base that is part of the 5' cap on eukaryotic mRNAs is 7-methylguanosine (m7G).