Animal Diversity.docx - Breana Campos Animal Diversity The...

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Breana Campos Animal Diversity The beginning of animal evolution can be traced back to choanoflagellates and other simple eukaryotes. Much of our collective knowledge relates to DNA analysis and fossil evidence. When peeking into past, we are making connection to common ancestors to further our knowledge and understanding of the animals in our world today. In addition, we also discover more about our vastly complex home, planet Earth. Choanoflagellates are known to be a sister group and the closest living relative to animals. When comparing the familiar multicellular animals, we see today to a minuscule organism like the choanoflagellate seems farfetched, but the evidence is in the genes. Scientist have discovered that the two organisms share similar proteins. [1] Animals multicellularity is thought to have stemmed off when the genes found new ways to use and encode proteins. This leads to the Neoproterozoic era, where soft bodied multicellular eukaryotic fossil was discovered. These fossils can be related to mollusks, sponges or cnidarians. Here we start to see the formation of shells and other structural developments.

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