Journal of Biology and Today's World

ISSN - 2322-3308

Eukaryotic Evolution

The cell of eukaryotic organisms (animals, plants, fungi) differs from that of prokaryotic organisms (Archaea and Bacteria) by the presence of several specialized organelles. The existence and organization of mitochondrial and chloroplast DNA, likewise as their biochemistry and a few structural traits, have led to their being considered as ancient bacteria integrated into a number cell by an endosymbiosis process. One possible hypothesis would be that current eukaryotes would descend from an archaeal ancestor who acquired proteobacteria, this mitochondrion.At the identical time, they need to acquire the power to hold out photosynthesis, and thus an autotrophic metabolism, a particularity of plants. The phenomenon of endosymbiosis is therefore very largely accountable for the biodiversity of eukaryotes that appeared during evolution. Thus, photosynthesis has developed in an exceedingly big variety of organisms: red and algae, green plants through primary endosymbiosis, alga, and plenty of other organisms through secondary or tertiary endosymbiosis.
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