Answer:
the bottom left one is the one
Polymorphic. Polymorphisms
refer to spasmodic genetic variation within the same species of an organism resulting in varying forms of the species. Polymorphic viruses, mutate at faster rates hence the virus
population is subject to high rates of turnovers. The high divergence of various
species, such as influenza, is as a result of 0.01 mutations per nucleotide site
per year.
Coexist... They don't harm us... And they even protect us from other organisms outside our body
And in our guts they make vitamins :)
Plz give me brainliest
Mylenation - an insulator along the axon
