Essay about The Evolution of Skin Colour - 4844 Words.

The less radiation, the lighter the native population's skin color tends to be. This is a great example of recent evolution in human populations. But what if we go back deeper in our evolutionary history, back to when all of humanity lived in Africa? At that time, all humans had darkly pigmented skin. A new study sheds light on how and why this.

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One example is skin color. Biological anthropologist Nina Jablonski uses satellite data to investigate the evolution of skin color, an aspect of human biological variation carrying tremendous social consequences. Jablonski underscores the importance of trying to understand skin color as a single trait affected by natural selection with its own.

Protection Against Skin Cancer and Eccrine Gland Destruction. Among competing hypotheses put forward to explain the development of epidermal pigmentation, the “genotoxic hypothesis,” though widely espoused, is untenable because the vast majority of skin cancers occur well past peak reproductive age.

The Sepia Rainbow. In the early 1990s, the evolution of skin color was regarded by many of her peers as an intractable problem. Theory held that darker skin had evolved in order to afford early humans—who had recently lost the cover of fur—a protection against skin cancer under the tropical sun.

Human skin color ranges in variety from the darkest brown to the lightest hues. An individual's skin pigmentation is the result of genetics, being the product of both of the individual's biological parents' genetic makeup, and exposure to sun.In evolution, skin pigmentation in human beings evolved by a process of natural selection primarily to regulate the amount of ultraviolet radiation.

Thus the evolution of humans over time shows that because of the environmental factors that contribute to or reduce the likelihood of the survival of certain species, that population has gone through natural selection to accommodate to their ecosystem such as through the improvement in the efficiency of absorbing Vitamin D and having variations of skin color.

The Biology of Skin Color: Black and White. The evolution of race was as simple as the politics of race is complex By Gina Kirchweger. Ten years ago, while at the university of Western Australia.

Humans skin is the most visible aspect of the human phenotype. It is distinguished mainly by its naked appearance, greatly enhanced abilities to dissipate body heat through sweating, and the great range of genetically determined skin colors present within a single species. Many aspects of the evolution of human skin and skin color can be reconstructed using comparative anatomy, physiology, and.

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Variations in skin color provide one of the best examples of evolution by natural selection acting on the human body and should be used to teach evolution in schools, according to a Penn State.

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