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Dictyostelium discoideum is a soil-living amoeba. A group of 100,000 form a mound as big as a grain of sand. The hereditary info. is carried on 6 chromosomes, sizes ranging from 4 to 7 Mb resulting in a total of about 34 Mb of DNA, a multicopy 90 kb extrachromosomal element that harbors the rRNA genes, and the 55 kb mitochondrial genome. The estimated number of genes in the genome is 8,000 - 10,000. Many of the known genes show a high degree of sequence similarity to genes in vertebrate…

Dictyostelium discoideum is a soil-living amoeba. A group of 100,000 form a mound as big as a grain of sand. The hereditary info. is carried on 6 chromosomes, sizes ranging from 4 to 7 Mb resulting in a total of about 34 Mb of DNA, a multicopy 90 kb extrachromosomal element that harbors the rRNA genes, and the 55 kb mitochondrial genome. The estimated number of genes in the genome is 8,000 - 10,000. Many of the known genes show a high degree of sequence similarity to genes in vertebrate…

Harvard research reveals the role of the flagellum in helping biofilms colonize rough surfaces.  http://www.seas.harvard.edu/news-events/press-releases/flagella

Harvard research reveals the role of the flagellum in helping biofilms colonize rough surfaces. http://www.seas.harvard.edu/news-events/press-releases/flagella

Caenorhabditis elegans, c. elegans is a free-living, transparent nematode (roundworm), about 1 mm in length, which lives in temperate soil environments. In the wild, they feed on bacteria that develop on decaying vegetable matter.

Caenorhabditis elegans, c. elegans is a free-living, transparent nematode (roundworm), about 1 mm in length, which lives in temperate soil environments. In the wild, they feed on bacteria that develop on decaying vegetable matter.

This image depicts a number of what were “suspected” smallpox scab fragments, from the archives of the Virginia Historical Society (VHS). More info: http://www.microbeworld.org/index.php?option=com_jlibrary=article=7061

This image depicts a number of what were “suspected” smallpox scab fragments, from the archives of the Virginia Historical Society (VHS). More info: http://www.microbeworld.org/index.php?option=com_jlibrary=article=7061

Paramecia conjugating

Paramecia conjugating

Phacus longicauda, a phototrophic, fresh water euglenid.  Long cauda on the posterior end.  Paramylon (disc in the middle) used for starch storage.

Phacus longicauda, a phototrophic, fresh water euglenid. Long cauda on the posterior end. Paramylon (disc in the middle) used for starch storage.

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