| PLEASE NOTE: this is the
third
draft of this page, uploaded 13 Oct 2008. If you find any part
of it difficult to understand or in need of improvement, please don't hesitate
to contact me. The charts as given are tentative, used to
demonstrate how STR data can be used to authenticate pedigrees. We
are at the
beginning of a long quest, one that will take many more
participants (and thus years) to come to full fruition. However,
it's useful to construct even preliminary charts because they tell us which
data we need most, that is, which descendants we should be giving priority
to finding
and funding. |
VIEWING TIP: You can view more of the chart at one
time if you reduce the text size in your browser.
If you are using Explorer v. 6, click View > Text Size
> Smallest; if you are using Explorer v. 7, use Ctrl+/- to alter the page
size. |
| These "node charts" are actually cladograms, like the one familiar
to you showing the
branching relationships between haplogroup subclades. Each fork
or "node" in a cladogram represents the appearance of a new mutation.
In the case of the haplotree, it's a new SNP mutation; in the case of these
node charts (below), it's a new STR mutation. In the node charts,
the branching cladogram is represented by a table, similar to the
table I used to represent the Haplogroup J cladogram. |
CAVEATS:
Peter I had three known sons: Peter II, Abel I, and James
I. As of this writing, no one has proven a paper descent from James
I, though there seems little doubt that he had at least some children.
Secondary sources do not agree on the identity of the parents of James
T. CARRICO, a descendant of whom is one of our test subjects. Some
say he is son of John I (Peter2, Peter1); others
say he is son of James II (Peter2, Peter1).
Neither connection has been proven, so I've created two charts (below),
one with James T. as son of John I and one with James T. as son of James
II. Of course, it may be that James T. is son of neither of them. |
| I realize that, at first, these charts may seem complicated, but once
you grasp the concept of creating a descendant tree by plotting the appearance
of new mutations, it really becomes quite simple. We just need a
lot
more participants to make it work and, as always, better paper documentation.
DNA testing needs to used as a tool to support a pedigree when it's
correct and falsify it when it's wrong, but it cannot be used instead
of a paper pedigree. |
| Pale yellow table cells indicate no mutation has occurred.
A row of grey table cells indicate a mutation must have taken place, but
it's unknown in which generation it took place (the testing of more cousins
can reveal the locations of these mutations). White table cells indicate
lines not yet tested. |
|
