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3 Domains of Classification All living organisms share certain similarities: they can all replicate, and the replicator molecule is DNA. In addition to having the same replicating molecules, all living organisms contain some means of converting the information stored in DNA into products used to build cellular machinery from fats, proteins, and carbohydrates. For many years, life was divided into two main divisions: Prokaryotes and Eukaryotes. Recent work has shown that what once were called prokaryotes are far more diverse than anyone had suspected. As a result, the Prokaryotes are now divided into two domains: Bacteria and Archaea. These groups are not ancestral to each other, and each share certain features with the others as well as having unique characteristics of their own. The three domains that exist are Bacteria, Archaea, and Eukaryotes. The first group is Bacteria. Bacteria are often given a bad rap.
Approximate Word count = 560
Approximate Pages = 2.2
(250 words per page double spaced)
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