Version 15 of Educator Biology



Directions: As you watch the 05.03 Assignment Help Video, fill out the RED portions of this lab report. Title: Skull AnalysisHypothesis: Predict the species of your skull based on first observation, giving an explanation for your prediction.Procedure:Refer to the following website for a detailed description of procedure: . Data and Observations: Record the observations from your virtual lab in the tables below. Quantitative Data:SkullDistance BC (cm)Distance AC (cm)Unknown Fossil Skull ?Pan troglodytes (modern chimpanzee)Homo sapiens(modern human)Homo erectus (extinct hominid)Australopithecus afarensis (extinct hominid)Formula to calculate Supraorbital Height: (BC/AC) × 100 = Supraorbital Height Put your qualitative observations (brief descriptions) into the columns shaded BLUE. Put your quantitative observations (supraorbital height calculations) into the column shaded into the column shaded GREEN.SkullForeheadFaceTeethForamen MagnumBrain CavitySupraorbital Height (cm)Pan troglodytes (modern chimpanzee)?????Homo sapiens(modern human)?????Homo erectus(extinct hominid)?????Australopithecus afarensis (extinct hominid)?????Unknown Fossil Skull ??????Conclusions: Answer the following questions in complete sentences.Was your hypothesis correct? Explain.Answer…Which of the four species does the unidentified skull most resemble? Predict how you think it may relate to the other species in terms of evolution. Justify your answer with specific observations.Answer…How do the shapes of the face, forehead, and teeth differ between the various species? What do you think accounts for these differences? How might some of these differences be possible adaptations?Answer…In what way do you think the location of the foramen magnum relates to the movement of each species?Answer…What might the shape of the skull and the supraorbital height tell us about each species?Answer… ................
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