The Five Kingdom System And The Eukaryote Prokaryote Dichonomy

1120 Words Apr 29th, 2015 null Page
Even though systematics previously used more conventional systems such as Chatton’s division of life in to two main cellular groups; the eukaryote-prokaryote dichonomy (cited in Sapp, 2005), as well as Whittaker’s Five Kingdom system to organise all living things (Whittaker, 1969), they do not co-exist compatibly or correctly. The five kingdom system is not phylogenetically correct and eukaryote and prokaryote systems do not take into consideration new sequencing abilities (Kandler, Wheelis & Woese, 1990). These previous taxa are outdated because they do offer readily available, accurate or historical information. Whilst previously grouping eukaryotes and prokaryotes using cellular data, currently on a molecular level, sequencing gives us a deeper understanding of the relationships between all organisms and how the prokaryote archaebacteria is more like a eukaryote (Kandler et al.,1990). All organisms have certain similarities but being able to differentiate them allows us to explain how they function differently and group organisms accordingly, consequently correct taxon is important (Fox & Woese, 1977).

The eukaryote and prokaryote taxon was and still is commonly used as a method for differentiating organisms between their main differences; highly evolved eukaryotes having a nuclear membrane bound nucleus and single celled prokaryotes devoid of one, having a nucleoid region instead (Sapp, 2005). Prokaryotes formed before the nucleus and are found to be the earliest…

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