Answer:
You could definitely share less than 25% of your DNA. In fact, most nephews share a bit more or less than 25% of their DNA with their aunts or uncles.
Having said this, 16% is starting to get pretty far from 25%. This doesn’t make it impossible, just less likely than say 24% or even 20%.
Still, such a low number is not unheard of for people who should theoretically share 25% of their DNA. Here is a very cool chart that shows some of the ranges that one group has found. They used only data in which the relationship was known to be true.
Step-by-step explanation:
hope this helps