Anth. 105 Human Species – Lab 3 ReportAriel LagaresNovember 4, 2013IntroductionEvolution distinguishingly changed how primates and humans live and survived according to their environments. For this reason, we are analyzing the relationships between Diet Quality, Tooth Shape, and Daily Travel Distance in primates and humans. These aspects respectively related to one another in humans, fossil hominins, and other primates. In humans, our tooth shape reflects how we eat in our diet quality. Most humans today eat meat, which sculpts our molars to be much smaller compared to other primates. Also, our daily travel distance affects our diet quality score. The longer the travel distance, the higher the diet quality score will be in order to have enough calories for our travels. As for fossil hominins, their diet quality relates to their tooth shape in which certain species that had eaten leaves & fruit have larger molars than those who had started to eat meat in their diets. For primates, their diet quality also sculpts their molar area in which fruit and leaf-eating primates with greater body mass have bigger molars than the primates with smaller body mass. In this project, we investigated the tooth shape of several, common primates (Gorillas, Macaques, Baboons, etc), fossil hominins (Australopithecus africanus, Homo erectus, etc) as well as a human by measuring their molars and finding their molar areas. For diet quality score, we calculated how much of a certain food we eat such as meat, fruit, etc. and multiply that percentage with a certain point each food category is worth, and added all of them to find our diet quality score. The diet quality scores for the other primates and for hunter-gather groups in Africa were already calculated for us on the data sheet. As for daily travel distance, we used our pedometers to count our steps and from there, we calculated our average walking distances per day. As for other primates and hunter-gatherers, they were already given to us on the data sheet. Hypothesis1.In the diet quality, once meat is included which will increase the score, the molar area will be smaller because the primates who only eat leaves and fruit have greater molar areas, and chewing plants is more difficult than chewing meat, which we, humans do.