In terms of $DNA$ and $RNA$ structure, what is a nucleotide?
A nucleotide is a heterocyclic base.
A nucleotide is a sugar molecule covalently bonded to a heterocyclic base.
A nucleotide is a sugar molecule bonded to phosphate group and a heterocyclic base.
A nucleotide is a heterocyclic base bonded to phosphate group.
The bacterium used in Griffith’s experiment was
Crossing over takes place at a stage between
The number of autosomes in man is
Enzyme aminoacyl synthetase is responsible for
Cyclic adenosine monophosphate was discovered by