Teresa, I have not read through all the information in detail, nor did I review who added the information, or when, or why, or for how long you've been the PM.
What I would do if I were you is to first, reorganize. Put in some sub-headings, either actual headings using "===" etc. or just bold titles at the beginnings of paragraphs.
It looks to me like there has been serious disagreement about the profile in the past, and I would not remove the arguments, but rather group them together and put them in the research notes. You can always add your own opinions and introductory comments.
Again, just my opinion, but I would contact the person who added the DNA discussions to get more information.
If you just wipe out someone else's contributions without discussion, I don't see how that resolves anything. Other people may disagree with me.