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Hace 1 día · Eukaryotes are organisms that range from microscopic single cells, such as picozoans under 3 micrometres across, [7] to animals like the blue whale, weighing up to 190 tonnes and measuring up to 33.6 metres (110 ft) long, [8] or plants like the coast redwood, up to 120 metres (390 ft) tall. [9]
Hace 2 días · Eukaryotic genomes. In a typical human cell, the genome is contained in 22 pairs of autosomes, two sex chromosomes (the female and male variants shown at bottom right), as well as the mitochondrial genome (shown to scale as "MT" at bottom left). Eukaryotic genomes are composed of one or more linear DNA chromosomes.
Hace 3 días · Archaea ( / ɑːrˈkiːə / ⓘ ar-KEE-ə; sg.: archaeon / ɑːrˈkiːən / ar-KEE-ən) is a domain of single-celled organisms. These microorganisms lack cell nuclei and are therefore prokaryotic. Archaea were initially classified as bacteria, receiving the name archaebacteria (in the Archaebacteria kingdom ), but this term has fallen out of use. [4]
Hace 2 días · Euglena, a single-celled eukaryote that can both move and photosynthesize. Eukaryotes are hypothesized to have split from archaea, which was followed by their endosymbioses with bacteria (or symbiogenesis) that gave rise to mitochondria and chloroplasts, both of which are now part of modern-day eukaryotic cells.
Hace 2 días · Cyanobacteria ( / saɪˌænoʊbækˈtɪəri.ə / ), also called Cyanobacteriota or Cyanophyta, are a phylum of autotrophic gram-negative bacteria [4] that can obtain biological energy via oxygenic photosynthesis.
Hace 6 días · A holobiont typically includes a eukaryote host and all of the symbiotic viruses, bacteria, fungi, etc. that live on or inside it. However, there is controversy over whether holobionts can be viewed as single evolutionary units.
Hace 3 días · Since porifera are considered to be the earliest divergent animals, these findings indicate that the basic toolkit of meiosis including capabilities for recombination and DNA repair were present early in eukaryote evolution.
