The video was about homologous and analogous structures, the vestigial structure, the endosymbiotic theory, and micro and macro evolution. Homologous is when the structure of the bones of different species are similar to each other. Analogous is when the structure of bones of different species that do the same thing are not similar, for example, the wings of a butterfly, prehistoric bird, modern bird, and bat have bones structured differently but they all do the same thing. Vestigial structure is when an organism has organs or structures that that seem to serve no useful function. The endosymbiotic theory is when a free living organelle is taken in by another cell and is able to live inside that cell helping it. Microevolution is the changes in allele frequencies that can occur overtime within a population. Macro evolution is when it's possible to see every generation of a living/dead species.
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May 2014
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