Which statement about an inference is correct?

An inference is not based on any evidence.

An inference is based only on what a text says.

An inference always turns out to be right.

An inference requires that you use clues.

An inference is not based on any evidence

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.