Pyrimidines have a single ring in their molecule.
Purines. They are one of the two types of nitrogenous bases found in DNA and RNA, and they consist of a double-ring structure. Adenine and guanine are examples of purines.
Saturn has many colorful rings.
how many rings does mars have
Venus does not have rings.
mercury has no rings
6 rings
2 rings
4 Superbowl rings.
4 rings
they have 26 rings as a them
There are no rings in Venus.
it has 13 rings