Here's one that's a bit specialised, but it's got me puzzled.
Pretty much every Genealogy website provides Autosomal DNA testing.
That is, the DNA test examines the 22 autosome pairs.
In addition to the Autosomal pairs, there's Y-chromosome DNA (passed down the father-son male line).
And Mitochondrial DNA (passed down the other-daughter female line).
There are specific tests for Y-DNA and Mt-DNA, which Autosomal DNA testing doesn't include.
So Autosomal DNA tests will not identify the direct male or female lines (the two Haplogroups).
My question is, do the Autosomal pairs include the Y-DNA and Mt-DNA ?
So the test will still find relationships down the direct male and direct female lines.
It just won't specifically identify them as the direct male and direct female lines.
Is there somebody really clever out there who knows ?