828
A derived form of " MCPH1 " called haplogroup D appeared about 37,000 years ago ( any time between 14,000 and 60,000 years ago ) and has spread to become the most common form of microcephalin throughout the world except Sub-Saharan Africa ; this rapid spread suggests a selective sweep .
 location: Sub-Saharan Africa
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Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 location: Sub-Saharan Africa