TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: The majority of human genes have two or more possible alleles.

SOLUTION: How many possible alleles do the majority of human genes have?

PROBLEM: You call materials able to conduct electricity with 100% efficiency, meaning that no energy is lost during the electrical transmission, superconductors.

SOLUTION: What do you call materials able to conduct electricity with 100% efficiency, meaning that no energy is lost during the electrical transmission?

PROBLEM: Ultrasound, a diagnostic technology, uses high-frequency vibrations transmitted into any tissue in contact with the transducer.

SOLUTION:
What diagnostic technology uses high-frequency vibrations transmitted into any tissue in contact with the transducer?