What are two types of virus

the most speciallized is b. grizzly bear

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.