Popular Article: Amoeba
Amoeba is a genus of protozoa that moves by means of temporary projections called pseudopods (false feet), and is well-known as a representative unicellular organism. Protozoa are single-celled eukaryotes, which demonstrate mobility and heterotrophy like animals, but are grouped in the kingdom Protista. The amoeba is one of nature's simplest organisms; yet, it shares many common features with nature's most advanced being, Homo sapiens, such as DNA, cellular structure, and the phagocytosis activity of the white blood cells, whereby they engulf and destroy pathogens.
Because of their simplistic nature, amoebas are often referenced in discussions of evolution, as those advocating design question how organisms as simple as amoebas can evolve by accident or chance to yield the great complexity seen in life today. While amoebas commonly are presented as reproducing asexually, some researchers have argued that analysis of the evidence of sexual reproduction in several amoeboid lineages leads to the conclusion that amoeboid lineages are anciently sexual and asexual groups are a more recent development.