Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: As a myotube is formed from many different myoblast cells, it contains many nuclei, but has a continuous cytoplasm.

Output: As a myotube is formed from many different myoblast cells, it contains many nuclei, but has a continuous what?


Input: Consider Input: Multiple genes mutations is usually necessary to develop cancer.

Output: What is usually necessary to develop cancer?


Input: Consider Input: Leukocytes blood cells are white.


Output: What color are leukocytes blood cells?