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

The double helix dna shape forms when the two nucleotide chains wrap around the same axis.
What distinctive dna shape forms when the two nucleotide chains wrap around the same axis?

Newts drop their tails when threatened of the following is an example of an escape strategy that is used to avoid being killed and eaten by predators.
Which of the following is an example of an escape strategy that is used to avoid being killed and eaten by predators?

You call the movement of a substance from an area of a higher amount toward an area of lower amount diffusion.
What do you call the movement of a substance from an area of a higher amount toward an area of lower amount?