Today's topic, theory in two, indicates the Dow theory. Symbiotic comes from the word symbiosis and symbiosis comes from the Greek "together" and "biobas" or "to live," which would practically be like living together. That is, there is a biological interaction or a close and very persistent relationship between two organisms of different species, such as bees and plants, which, although they are of different species, have a very, very convenient relationship since both obtain a benefit. The bees feed themselves, but while they bring this food to their honeycomb, do they pollinate? the whole field and this is called without gods and to delve into this topic it is very important that I introduce you to the pioneer she was the one who popularized this theory so we will receive with a very loud applause to lynn margulis so it is because women also research them american in the year 1967 she popularized the theory in two and biotic which she called in two symbiosis in itself again you were surprised but something that if you have to be surprised is that this theory describes the origin of eukaryotic cells if so pay close attention because I am going to try to explain this theory to you according to the hypothesis eukaryotic cells would have originated from different prokaryotic cells through a symbiotic relationship that became very stable and permanent so that you can understand more this whole topic were bacteria eating bacteria that caused a great evolutionary leap if so a prokaryotic cell ate another smaller prokaryotic cell and so on and so forth but this evolutionary force generated this new type of cell which is called eukaryote so we can say that a eukaryote cell is the accumulation of small mutations in series that caused the addition of complex structures that already existed previously in prokaryotic cells and in this way they began to metabolize carbon dioxide federico and absorb sunlight and start the process of photosynthesis thus beginning to modify that primitive atmosphere that Opare told us about and currently it is accepted that the mitochondria and chloroplasts of eukaryotes come from endosymbiosis now endosymbiosis conferred certain powers to the new organisms and they were not these powers like those of goku and his friends not number one it gave them the capacity for oxidative metabolism and you will ask and what is that for good with this the cell in arabia was able to become an aerobic cell which is an incredible power it is as if you they gave the ability to breathe underwater of course in vice versa but it is to give you a little idea and as a second power ultra sayayin had the possibility of carrying out photosynthesis therefore it became an autotrophic organism capable of producing organic molecules this theory is very controversial without that it has good foundations and it became very interesting to include them in this video so I will explain them to you number 1 mitochondria and chloroplasts have morphological dimensions similar to those of bacteria number 2 these homes have adn arn and ribosomes which are essential components for their duplication without importing the cell nucleus and number three they have circular DNA just like current bacteria that is why it is thought that these cells took the next step for the existence of animals for these reasons that lily Margolis is very famous in addition to hating televisions and if she lived today I think she would hate youtube but no matter her contribution is really brilliant now I wonder if a coast the bard ate another pot be bard and the first eukaryotic cell originated and from a prokaryote another prokaryote was eaten and a eukaryote originated and life arose and if I am like my grandmother I hope it is helpful to this little video don't forget to subscribe share and give a very good like and remember sonia are usual thumbs up who believes everything is possible