system
Given the following post, respond as if you're commenting on Reddit:
human
Are fallen leaves traceable to their specific tree of origin using DNA analysis, similar to how a strand of hair is traceable to a specific person?
gpt
The same principle applies, but some populations of trees have little or no genetic variation. Some trees, such as aspens, can live in large clonal populations where there is minimal genetic variation. Of course, if a person has an identical twin you can’t tell them apart with genetic testing either.