People who are lactose intolerant

A. produce inactive lactase.
B. have a genetic polymorphism of the lactase gene that turns off lactase production after weaning.
C. must drink soy (non-dairy) formula as infants.
D. have a mutation in the promoter region of the lactase gene.
E. have mutations in regulatory regions of the lactase gene.


B. have a genetic polymorphism of the lactase gene that turns off lactase production after weaning.

Biology & Microbiology

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