Natural variation in skin color due to natural selection can be seen in nearly every classroom in the us. Which skin tone is linked to higher vitamin d.
The Evolution Of Human Skin Color Pdf
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How is vitamin d linked to natural selection.
How is vitamin d linked to natural selection. Vitamin d is a fat soluble vitamin present in very few foods found in supplements and added to others4. 159 issue 3815 pp. There is no known good natural source of vitamin d other than exposure to sunlight.
Science 09 feb 1968. The idea that variation in skin color is due to where someones ancestors originated and how strong the sun was in those locations is inherently interesting jablonski noted. However vitamin d genome wide analyses to date have been conducted mainly in european populations and thus the full range of slc24a5 genotypes may not have been fully explored.
Yes the requirement for production of vitamin d in the skin has lead to the geographic selection of white and black coloured humans. Because humans now move around the globe far faster than evolution can adjust for the sun. How is vitamin d linked to natural selection.
Which skin tone is linked to higher vitamin d. How is vitamin d link to natural selection. Generally a diet high in oily fish prevents vitamin d deficiency.
How is vitamin d linked to natural selection. Yes the requirement for production of vitamin d in the skin has lead to the geographic selection of white and black coloured humans. Uv light which skin tone allows someone to maintain the recommended level of vitamin d.
How is vitamin d linked to natural selection. Humans get vitamin d from the sun and it is necessary for bone growth. Some authors question if vitamin d deficiency leads to sufficient health problems to act as a selection pressure.
Based on this information revised your previous hypothesis to explain the evolution of the variation and distribution of skin color. The natural selection hypothesis suggests that lighter skin colour evolved to optimise vitamin d production. This highly unexpected finding may suggest that factors other than vitamin d status are driving natural selection on the basis of skin colour.
Which is a good source of vitamin d. Based on this information revised your previous hypothesis to explain the evolution of the variation and distribution of skin color.
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