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Vertimyst Vertimyst
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6 years ago
Biological race is defined by
 
  A) blood group.
  B) sickle-cell gene.
  C) lactase enzyme gene.
  D) observable features such as skin color or hair shape.
  E) Any of the above could be used to biologically categorize humans in different ways.
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HolyfreyHolyfrey
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6 years ago
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Vertimyst Author
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6 years ago
this is exactly what I needed
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Correct Slight Smile TY
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2 hours ago
Helped a lot
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