I "participated" in research by having a chromosomal microarray. That's how they discovered I have 12 genes missing on my 16th chromosome. When they tested my parents, they discovered that the missing genes were a genetic accident which happened before conception. So, no one else in my family has the mutation, but I might pass it on to my own kids.
Of course, most people with my particular mutation have 25 genes missing, and I have a lot of eccentric relatives. Neuroatypicalities run in my family. So, to a much lesser extent, does autism. I just have a genetic mutation that "autiefies/ADHDfies" my neurodevelopmental difficulties.
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Living with one neurodevelopmental disability which has earned me a few diagnosis'