TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Pleiotropic effects causes symptoms associated with sickle-cell disease.

SOLUTION: What causes symptoms associated with sickle-cell disease?

PROBLEM: For to synthesize glycogen purpose does liver use the excess carbohydrate.

SOLUTION: For what purpose does liver use the excess carbohydrate?

PROBLEM: The diversity of alleles and genotypes within a population is known as genetic variance.

SOLUTION:
The diversity of alleles and genotypes within a population is known as genetic what?