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

[Q]: Most protein antigens require signals from helper t cells (th2) to proceed to make antibody.
[A]: Most protein antigens require signals from helper t cells (th2) to proceed to make what?


[Q]: The double helix dna shape forms when the two nucleotide chains wrap around the same axis.
[A]: What distinctive dna shape forms when the two nucleotide chains wrap around the same axis?


[Q]: Three many pairs of autosomes are there.
[A]:
How many pairs of autosomes are there?