...proving it in court would be difficult. B/c ya know; a four letter word starting with a c and ending with a h.

They should share about 25% of their DNA.

Investigators have previously uploaded DNA data from a crime into online DNA-matching sites like GEDmatch, and then contacted the matching relative to eventually locate the suspect!

the DNA from the semen to people who have tested at one of the DNA testing sites (23andMe, FamilyTreeDNA, Ancestry.com) and uploaded their results to a free database called GEDMatch.com. Here's the company and the genetic genealogist who are at the forefront of this method of solving cold cases:

https://parabon-nanolabs.com/

https://northernvirginiamag.com/culture/culture-features/2020/06/16/meet-cece-moore-the-woman-partnering-with-novas-parabon-nanolabs-to-solve-cold-cases/

any relatives to test?

Lots of people have already been DNA-tested and even uploaded those results to other sites (like me).

If one of my grandfathers committed a crime and left behind his DNA, I would still show up as about a 25% match. After narrowing it down to me and my family, investigators would then proceed to gather more evidence.

...match to the person on file. This narrows down the possible suspects to your family.

Next they have to get samples from other family members - by hook or by crook. Cops have even followed a close match family member to retrieve a discarded soft drink cup for testing/confirmation.

The way they caught Golden State Killer was even more amazing. They basically built a family tree starting with what could be called third cousins of the killer. From there they built a family tree of those “third cousins” using birth records, death records, newspaper announcements etc. traveling up to the root of the tree.

They then Built family tree back down spreading it out again based on records/notices. From there they had, iirrc, a couple hundred possible suspects. They eliminated a bunch based on police work (lived in different part of the country, doesn’t fit the description, etc). From there they collected samples by hook or by crook.

Fascinating story:

https://www.theatlantic.com/science/archive/2018/04/golden-state-killer-east-area-rapist-dna-genealogy/559070/

How a Genealogy Website Led to the Alleged Golden State Killer
Powerful tools are now available to anyone who wants to look for a DNA match, which has troubling privacy implications.

That with an autosomal DNA match would clinch it!

Edit: Or at least be so substantial that Donnie's DNA could be demanded, at some point.

Good grief, I somehow got the idea that the judge (Donnie's sister) was her mother... but she's the aunt.

Grandmother would show up identical to the mitochondrial in the sperm stain. Mary's father can be eliminated because he was dead at the time of the rape. Trump's brother, Robert, could be the rapist. I don't know who the MIT uncle's mother was.

... Linda Lee Clapp.

And great replies. Make it so.

I doubt, however, that a familial DNA comparison would be admissible, even in a civil case, when it is essentially the only physical proof of sexual contact.

I did not have a civil practice, so my understanding might be off base.

Also, don't forget that the court has already issued an order for trump to provide a DNA sample.

in the White House or at Mar a Lago managed to sneak a glass or other object with his DNA to the DA or the complainant's attorney but it might not hold up in court due to chain of evidence objections.

...barring any mutations.

However, Trump may a mutant or the spawn of Satan. He certainly lacks many features of humanity.

It could only be the same if they had the same mother, or if Mary was the child of Donald's sister. Since her mother is from outside the family, the mtDNA will not match.

Thanks/

a better match with one of his
children. Or maybe his sister.

DNA to establish the link to the Russian royal family.
Alexandra was a granddaughter of Victoria and Phillips mother was the great granddaughter of Victoria.....
So why not.

Worth a try right?