Those are not duplicates because no one has voted to close them as such.
I suspect that they should become duplicates.
I edited their titles to try and make them look more like questions that may be duplicates of one another.
How the questions appear on Twitter is one consideration for what makes a good title but it is not the only one.
These title edits are part of an attempt to try and identify what might make a good title for one Canonical Q&A on understanding autosomal DNA results. They make these questions start to show up in the sidebar as Related, even without being linked to each other, by virtue of their titles having similar structure.
I only edited three to get a feel for whether doing more later might be useful or not.
The titles on those three questions have since been shortened to try and make them better for Twitter.