The Water Deer (Hydropotes inermis) is a usually solitary animal, besides the rutting months, and a good swimmer. There exist two subspecies: the Chinese Water Deer (Hydropotes inermis inermis) and the Korean Water Deer (Hydropotes inermis argyropus).
Viruses lack most of the internal structure and machinery which characterize 'life', including the biosynthetic machinery that is necessary for reproduction. In order for a virus to replicate it must infect a suitable host cell.
Section 6.3 Viruses: Structure, Function, and Uses. A virus is a small parasite that cannot reproduce by itself. Once it infects a susceptible cell, however, a virus can direct the cell machinery to produce more viruses. Most viruses have either RNA or DNA as their genetic material.The nucleic acid may be single-or double-stranded.he T phages of E. coli are large lytic phages that contain a single molecule of double-stranded DNA. This molecule is about 2âÃâ10 5 base pairs long in T2, T4, and T6 viruses and about 4âÃâ10 4 base pairs long in T1, T3, T5, and T7 viruses.