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Created with Fabric.js 1.4.5 Embryology and Morphology Morphology Embryology Definition: "This resemblance is often expressed by the term "unity of type;" or by saying that the several parts and organs in the different species of the class are homologous" How do these homologous organs appear between so many species? The successive slight modification of an organism for the profit of the organism Definition: The Study of Embryos Embryos all appear very similar, which displays that many organisms share similar ancestors Embryos are more important for classification because "the structure of the embryo is even more important forclassification than that of the adult. For the embryois the animal in its less modified state; and in so far it reveals the structure of its progenitor." Morphology was originally based on organisms having a single similar organ. this system did not work because as organisms branched from the main vein their organs often changed enough to be dissimilar from the original organism. Therefore it requires multiple organs to class an organism. In order to classify a species scientists used the trait that was most common between all of the organisms in the species. Darwin's discoveries All science at the time of Darwins discovery was intertwined with religion. The people believed that all animals were created by a one godly being who planned it all out. Darwin revolutionized both Embryology and Morphology through his discoveries aboard the H.M.S Beagle Organisms used to be classified by the similarities of their important organs This system did not work. Many similar organisms had organs that differed, which would make the organs of less importance, and change the classification of organisms. double click to changethis text! Drag a cornerto scale proportionally. By Tristan and Alex
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