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Hace 5 días · Genes evolve due to natural selection or survival of the fittest and genetic drift of the alleles. The term gene was introduced by Danish botanist, plant physiologist, and geneticist Wilhelm Johannsen in 1909. [8] It is inspired by the ancient Greek: γόνος, gonos, that means offspring and procreation.
16 de may. de 2024 · e. Marine prokaryotes are marine bacteria and marine archaea. They are defined by their habitat as prokaryotes that live in marine environments, that is, in the saltwater of seas or oceans or the brackish water of coastal estuaries. All cellular life forms can be divided into prokaryotes and eukaryotes. Eukaryotes are organisms whose cells have ...
Hace 2 días · Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells. Unlike other animals, they lack true tissues [12] and organs. [13] Some of them are radially symmetrical, but most are asymmetrical.
Hace 1 día · Didelphimorphs are small to medium-sized marsupials that grow to the size of a house cat. They tend to be semi- arboreal omnivores, although there are many exceptions. Most members of this order have long snouts, a narrow braincase, and a prominent sagittal crest. The dental formula is: 5.1.3.4 4.1.3.4 × 2 = 50 teeth.
Hace 3 días · Caenorhabditis elegans ( / ˌsiːnoʊræbˈdaɪtəs ˈɛləɡæns / [6]) is a free-living transparent nematode about 1 mm in length [7] that lives in temperate soil environments. It is the type species of its genus. [8] The name is a blend of the Greek caeno- (recent), rhabditis (rod-like) [9] and Latin elegans (elegant).
Hace 1 día · Trypanosoma brucei gambiense. Trypanosoma brucei rhodesiense. Trypanosoma brucei is a species of parasitic kinetoplastid belonging to the genus Trypanosoma that is present in sub-Saharan Africa. Unlike other protozoan parasites that normally infect blood and tissue cells, it is exclusively extracellular and inhabits the blood plasma and body ...
Hace 3 días · Dinoflagellate. The dinoflagellates (from Ancient Greek δῖνος (dînos) 'whirling', and Latin flagellum 'whip, scourge') are a monophyletic group of single-celled eukaryotes constituting the phylum Dinoflagellata [5] and are usually considered protists. Dinoflagellates are mostly marine plankton, but they also are common in freshwater ...
