rRNA sequence evidence separated prokaryotes into Eubacteria and Archaea. The three domains are Archaea, Eubacteria and Eukarya, which differ in rRNA, chromosomes, histones, introns, cell walls and membrane lipids.
The black-legged tick (Ixodes scapularis) is an arthropod which sucks blood from humans and other mammals. It is encountered mainly in wooded and semi-wooded areas.
Some ticks can be infected by the bacterium Borrelia burgdorferi. When a tick bites a human, the bacterium is often introduced, causing Lyme disease. Lyme disease is a public health problem in North America and, if left untreated, can cause important neurological impairment. The diagram represents the two-year life cycle of a tick.
State the domain into which ticks are classified.