Results 101 to 110 of about 11,557 (190)

Animal emergence during Snowball Earths by thermosynthesis in submarine hydrothermal vents [PDF]

open access: yes, 2009
Darwin already commented on the lateness in the fossil record of the emergence of the animals, calling it a valid argument against his theory of evolution^1^.
Anthonie W. J. Muller
core   +2 more sources

Evolution of small prokaryotic genomes

open access: yesFrontiers in Microbiology, 2015
As revealed by genome sequencing, the biology of prokaryotes with reduced genomes is strikingly diverse. These include free-living prokaryotes with ~800 genes as well as endosymbiotic bacteria with as few as ~140 genes.
David José Martínez-Cano   +6 more
doaj   +1 more source

Plastid origin: who, when and why?

open access: yesActa Societatis Botanicorum Poloniae, 2014
The origin of plastids is best explained by endosymbiotic theory, which dates back to the early 1900s. Three lines of evidence based on protein import machineries and molecular phylogenies of eukaryote (host) and cyanobacterial (endosymbiont) genes point
Chuan Ku   +5 more
doaj   +1 more source

Endosymbiosis and biodiversity [PDF]

open access: yes, 2013
Endosimbioza ima važnu ulogu u postanku i evoluciji eukariotske stanice. Različiti plastidi nastali su nizom endosimbiotskih odnosa te uzrokovali raznolikost u svijetu algi.
Korša, Ana
core   +2 more sources

Integrating Horizontal Gene Transfer and Common Descent to Depict Evolution and Contrast It with ‘‘Common Design [PDF]

open access: yes, 2010
Horizontal gene transfer (HGT) and common descent interact in space and time. Because events of HGT co-occur with phylogenetic evolution, it is difficult to depict evolutionary patterns graphically. Tree-like representations of life’s diversification are
Espinosa, Avelina   +1 more
core   +2 more sources

Metabolic pathway redundancy within the apicomplexan-dinoflagellate radiation argues against an ancient chromalveolate plastid

open access: yesCommunicative & Integrative Biology, 2016
The chromalveolate hypothesis presents an attractively simple explanation for the presence of red algal-derived secondary plastids in 5 major eukaryotic lineages: “chromista” phyla, cryptophytes, haptophytes and ochrophytes; and alveolate phyla ...
Ross F. Waller   +3 more
doaj   +1 more source

Diversity in biosynthetic pathways of galactolipids in the light of endosymbiotic origin of chloroplasts

open access: yesFrontiers in Plant Science, 2016
Cyanobacteria and chloroplasts perform oxygenic photosynthesis, and share a common origin. Galactolipids are present in the photosynthetic membranes of both cyanobacteria and chloroplasts, but the biosynthetic pathways of the galactolipids are ...
Naoki eSato   +3 more
doaj   +1 more source

Novel Trypanosomatid-Bacterium Association: Evolution of Endosymbiosis in Action

open access: yesmBio, 2016
We describe a novel symbiotic association between a kinetoplastid protist, Novymonas esmeraldas gen. nov., sp. nov., and an intracytoplasmic bacterium, “Candidatus Pandoraea novymonadis” sp.
A. Kostygov   +7 more
semanticscholar   +1 more source

Engineering Microbial Symbiosis for Mars Habitability [PDF]

open access: yesarXiv
The colonization of Mars presents extraordinary challenges, including radiation exposure, low atmospheric pressure, and toxic regolith. Recent advancements in synthetic biology and genetic engineering offer unprecedented opportunities to address these obstacles by utilizing terrestrial extremophiles and engineered organisms.
arxiv  

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