The Similarities Between Apes And Humans

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Throughout the course of this semester, it has become abundantly clear that apes and humans have much in common. Similarities can be found in anatomy, brain structure, genetics, behavior, etc. Despite these likenesses, it is also incredibly apparent that humans are not apes. Humans are distinct, with many unique characteristics that define them as a separate species. To begin, we can see that humans developed bipedal locomotion. Also during hominin evolution, brain size increased. To allow for both to evolve, a compromise had to be made. Bipedalism imposed a limit on how far the pelvis could expand, so in order for a baby to exit the birth canal, the baby had to be born neurologically immature. The implications of this are many. Initially, the baby will be entirely dependent on its mother for nurturing and attention. However, as it grows, it gains greater neurological capacities compared to its early ancestors, like complex problem solving abilities and enhanced communication through language. …show more content…

In order to evolve from four-legged locomotion and brachiation (hand-over-hand movement) to upright, two-legged locomotion, the pelvis had to adapt. The ilium which is the hip bone, or the upper part of the pelvis, rotated forward, while the ischium, the base of the pelvis, shortened to support the evolution of bipedalism. This adaptation allowed for humans to use their other two limbs to use and manufacture tools, as well as to carry objects and a number of other abilities, but it also led to the problem known as the “obstetrical

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