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Identify two physiological effects of solar radiation that likely acted as selective pressures in shaping the pattern of clinal variation of human skin color.

Respuesta :

batolisis

Answer:

Latitude

  • high latitude
  • low latitude

Explanation:

Clinical variations takes about gradual change in a trait and this variations take place over the geographic space, In clinical variations in skin color the latitude plays a major role because the latitude determine the amount of UV rays one will be exposed to.

The two physiological effects of solar radiation are At

  • High latitude: An individual is less exposed to UV rays hence the person tends to have a lighter skin while having a higher probability of Vitamin D synthesis
  • low latitudes : An individual is more exposed to UV rays hence the person tends to have a darker skin and increased protection against folate deficiencies.

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