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In humans, blood can be either Rh-positive or Rh-negative. Rh-positive individuals have the Rh antigen in their blood; Rh-negative individuals do not. The Rh-positive allele is dominant (A) while the Rh-negative allele is recessive (a). If 84% of the population is Rh-positive, what is the frequency of the Rh-positive allele (A)
Answers: 3
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Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.
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In humans, blood can be either Rh-positive or Rh-negative. Rh-positive individuals have the Rh antig...
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