Symbiogenesis, or endosymbiotic theory, is an evolutionary theory that explains the origin of eukaryotic cells from prokaryotes.It states that several key organelles of eukaryotes originated as a symbiosis between separate single-celled organisms.he theory of symbiogenesis (Greek: ÏÏÎ½ syn together, Î²Î¯ÏÏÎ¹Ï biosis living, and Î³Î­Î½ÎµÏÎ¹Ï genesis origin or birth) theory were first articulated by the Russian botanist Konstantin Mereschowsky in 1910, although he described the fundamental elements of the theory were described in a paper five years earlier.
Definition of rider: Additional clause, document, or slip of paper that adds, alters, amends, or removes the provisions of an associated or attached agreement or contract (such as an insurance policy) or a negotiable ...
Horse meaning. the Energy of Victory abounds. Victorious spirit and the symbolism of the Horse..... Horse is regal and fierce in competition, running her heart out to beat out her competitors to be the one to take first place, to have the crown of glory.The Horse is a totem of having the heart of a legendary competitor.reedom is the most sacred and spiritual meaning of what it is to be the Horse. Freedom in every sense of the word; mind body and spirit. Call upon the Horse spirit animal to set your spirit free.