Question

The Vitamin D hypothesis argues that lightly pigmented skin was an evolutionary advantage at higher latitudes...

The Vitamin D hypothesis argues that lightly pigmented skin was an evolutionary advantage at higher latitudes because it prevented a disease known as:

A- Rickets

B- Syphilis

C- Skin cancer

D- Celiac disease

Science   Anatomy-And-Physiology   
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Answer #1

Rickets

Rickets is a skeletal disorder due to the lack of vitaminD, calcium or phosporous. The light pigmented skin person can absorb more vitamin D through sunlight. Because of this lightly pigmented persons had decreased chance of getting rickets.

Syphilis is a sexually transmitted disease characterized by painless lesions in skin.

Skin cancer is caused mostly due to the UVrays. Throught lightly pigmented skin UV rays can easily absorbed so more chance of getting skin cancer.

Celiac disease is a intestinal disorder the pigmentation of skin had no role in it.

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