Tuesday, November 24, 2009
bipedality and brain size
Bipedality is the ability for an mammal to walk on two feet instead of four. It was believed for the longest time that bipedality evolved after the increase in size of the brain. Bipedality may have evolved after small mutations rendered some mammals able to walk on two, which is easier and more efficient. Natural selection would then act upon these organisms looking upon them with favor. In return these bipedality mammals will be more successful than the mammals that walk on all four. After this evolved the animals would need a bigger brain mass to store how to use their new ability.
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Yes and there are many advantages to bipedality such as: ability to carry things, grasp things while walking, hunt better, see farther to the horizon while walking, cover larger distances with less energy and displaying the male organs while hiding the female ones.
ReplyDeleteI like how you explain how the brain evolved.
ReplyDeletei'm glad you touched on how and what each advantage was to bipedality as well as their purpose. Also, great job on pointing out that bipedality came before larger brain size.
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