Fill in the Blank
The element ____________ is unique to nucleic acids compared with other macromolecules.
In the late 1800s and early 1900s, the macromolecule thought to be responsible for heredity was ______________.
The end of a nucleic acid strand with a free phosphate group is called the ________.
Plasmids are typically transferred among members of a bacterial community by ________ gene transfer.