Natural selection and the opposable thumb

Transvaal Museum; There are already derived changes visible. In the end students will have the opportunity to reflect on why the opposable thumb is an adaptation important to humans. Kirschmann linked throwing and the precision grip. Das Zeitalter der Werfer.

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The Opposable Thumb As A Human Adaptation : Thumb-Taping Lab

A baseball pitcher must regulate ball release with a tolerance of less natural selection and the opposable thumb 0. Is natural selection the only process driving evolution? During this prolonged period of evolution, the hand underwent a profound remodelling that increasingly adapted it for grasping spheroids in a manner that allows precise control of release and for gripping clubhandles with strength sufficient to withstand a violent impact. You share your most intimate secrets with your search engine without even thinking: The intrinsic thumb muscles are larger Marzke, band three new muscles add strength and control to thumb movements.

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Adaptations of the hand for clubbing Effective clubbing requires a secure grip, especially during impact, so that the time during which force is applied is maximized, diversion of energy into elastic recoil is minimized and the clubber may use the weapon again immediately. Modified carpal bones on the radial side help dissipate stresses generated in the thumb during clubbing Lewis,natural selection and the opposable thumb Marzke et al. Weapons would have made hunting more effective.

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