Acommon dna structural feature involved in gene regulatory systems is
a. supercoiling of dna.
b. looping of the dna.
c. unwinding of the double helix.
d. coiling into z-dna.
e. double-strand breakage of dna

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.