Discuss how eukaryotic organisms came into existence Coursework

Discuss how eukaryotic organisms came into existence - Coursework ExampleThe study of the origin of the eukaryotes is a dynamic appendage of this science, and much research has taken place in order to try and explain the development of this ridiculous and structurally and functionally distinct class of organisms (Bacterial phylogeny, 2006). at that place are many theories and precedents regarding this debate, and many of those models are contradictory in nature (Bacterial phylogeny, 2006). This paper purports to discuss the most commonly accepted and relevant models of the origin of eukaryotes, analyzing their strengths and weaknesses, and presenting a conclusion about the needs for future research into this field, and the specific parameters that should be aimed for in that future research. word/Body Let us begin our discussion with an understanding of a eukaryotic organism. The eukaryotic organisms, as opposed to the prokaryotic cells, have originated rather recently in the hi story of evolution (Bacterial phylogeny, 2006). ... is no structurally developed control center like the nucleus of the eukaryotes (White, 2006), and the organelles, if present, are simple-minded and non-membranous (White, 2006). Such organisms had the capability of endure in the harshest of environments, as was necessary in the early development of the worlds ecosystems (White, 2006). They reproduced by simple binary fission (Bacterial phylogeny, 2006) and could metabolise with or without the availability of oxygen (White, 2006), using a variety of chemicals as substrates for metabolism. In contrast, the eukaryotes are defined by the presence of a well-defined nucleus, which is membrane bound (White, 2006). There are a variety of organelles, which are complex in nature and many are in addition membrane-bound (White, 2006) the division of labour is enhanced and made more efficient in the eukaryotes (White, 2006). Such organisms are more and more oxygen-dependent (White, 2006), a nd have a reduced capability to withstand extremes of environments, requiring a more stable environment somewhat them (White, 2006). There is a general consensus of scientific opinion that the eukaryotes came into being by the fusion (Rivera & Lake, 2004) or association (Rivera & Lake, 2004) of different prokaryotic organisms (Rivera & Lake, 2004). Unfortunately, the consensus of opinion is limited till here. From this conjecture, several theories have arisen in an effort to surmount explain the behavior of eukaryotes, both genetically and phenotypically. Two of the most common models are the nucleus and mitochondria co-origin (Bacterial phylogeny, 2006) model and the nucleus-first, mitochondria-later (Bacterial phylogeny, 2006) model. Let us study the co-origin model first. Scientists supporting the co-origin model claim that a fusion