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Prokaryotes are those beings who have no organized nucleus. Their genetic material is loose in the cytoplasm. Eukaryotic beings are those having organized nucleus bounded by a membrane. Its genetic material is inside the core. There are seven species of sea turtles, grouped into two families - that of Dermochelyidae and the Cheloniidae. Of these, five are found in Brazil: 1. Tar-Taruga-Loggerhead (Caretta caretta); Turtle Giant (Dermochely coriacea) Turtle-of-Comb (Eretmochelys imbricata) Tar-Taruga-Green (Chelonia mydas); Oliva Turtle (Lepidochelys olivacea). Source: Tamar. humans, the theory says, for example, that we and chimps belong today the species is obviously different, but our ancestors millions of years ago, belonged to the same species. Currently, studies on the theory of evolution based on the reconstruction of evolutionary history, adding fossil evidence to the studies of anatomy, embryology, comparative physiology and genetics of organisms, seeking phylogenetic relationships: the higher the affinity between the two species, the more likely they have a common ancestor. But where begins the evolutionary history of life? With the advent of evolution, scientists have come to believe that all living beings on Earth have a common origin from a single cell, there are approximately 3.5 billion years. This cell, according to evolutionary theory, it would be simple, but very similar to those we know today and that make beings prokaryotes and eukaryotes. Only 2.5 billion years after the emergence of prokaryotes, the evolutionary process would give rise to the first living eukaryotes more complex as the cellular organization. As a single cell can give rise to such diversity among living beings? It is difficult to answer this question accurately, but we know that the diversity of living things on our planet is manifested at all levels of organization - from cell to ecosystems - and relates to all plant species, animals and microorganisms. The variety of these beings is essential so that they can cope with environmental changes. The greater the diversity, the greater the choice of answers of nature, because the distribution of organisms on the planet is not homogeneous nor static.
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Prokariota su bića koja nemaju organiziranu jezgru. Njihov genetski materijal je labav u citoplazmi. Eukaryotic bića onima koji su organizirali jezgra omeđena membranom. Njegova je genetski materijal unutar jezgre. Postoji sedam vrsta morskih kornjača, grupiranih u dvije obitelji - da je Dermochelyidae i Cheloniidae. Od tih je pet se nalaze u Brazilu: 1. Tar-Taruga-glavata (Caretta caretta); Kornjača Giant (Dermochely coriacea) Kornjača-of-Comb (Eretmochelys imbricata) Tar-Taruga-Green (Chelonia mydas); Oliva Kornjača (Lepidochelys olivacea). Izvor: Tamar. ljudi, teorija kaže da, primjerice, da smo i čimpanze pripadaju danas vrste je očito drukčija, ali naši preci milijune godina, pripadao iste vrste. Trenutno, studije o teoriji evolucije temelji na rekonstrukciji evolucijske povijesti, dodajući dokaze o fosilima u studiju anatomije, embriologije, usporedne fiziologije i genetike organizama, traži filogenetskih odnosa: veća bliskost između dvije vrste, vjerojatnije oni imaju zajedničkog pretka. Ali gdje počinje evolucijsku povijest života? S pojavom evolucije, znanstvenici su počeli vjerovati da sva živa bića na Zemlji imaju zajedničko podrijetlo iz jedne stanice, ima oko 3,5 milijarde godina. Ova stanica, prema evolucijskoj teoriji, to bi bilo jednostavno, ali vrlo slične onima što danas znamo i da bi bića prokariota i eukariota. Samo 2,5 milijardi godina nakon nastanka prokariota, evolucijski proces će dovesti do prvih živih eukariota složenijih kao stanične organizacije. Kao jedna stanica može dovesti do takve različitosti među živim bićima? Teško je odgovoriti na to pitanje točno, ali znamo da raznolikost živih bića na našem planetu se očituje na svim razinama organizacije - od stanice do ekosustava - i odnosi se na sve vrste biljaka, životinja i mikroorganizama. Raznolikost tih bića je bitno, tako da oni mogu nositi s ekološkim promjenama. Veća raznolikost, veći izbor odgovora prirode, jer je distribucija organizama na planeti nije homogena niti statični.