Thursday, June 7, 2012

DNA Update: 23andMe

A new feature at 23andMe is the ability to compare matches to one another, as long as they are "sharing genomes" with you.  I compared my father's 250+ matches.  (Took about eight weeks.)  Most matches matched a few others, usually with a very tiny segment.

In the above graph, my father (David) shares genetic material with all three of these people, though not on the same chromosome.  This could indicate a shared ancestry among all four of them.
In this graph, David matches all three of these people on the same area of Chromosome 12.
The limit of this DNA testing is that you are not told which side of the chromosome holds the match.
In other words, you have 23 PAIRS of chromosomes; one side from your mother, the other from your father.
All three people could match on the side from David's father, or from his mother, or one is on the maternal side, the other two on the paternal side.  We do not know from this comparison alone.
The new ability to compare matches against one another enables us to see that C. W. matches N. P, but not R. M.
In addition, N. P. does not match R. M.
From this, we can proceed with the hypothesis that N. P. and C. W. match David on one side of the family, while R. M. matches on the other.  We just have not figured out which one is which (yet).

Wednesday, June 6, 2012

More Family Tree DNA coupons

Here are two more coupons for Family Tree DNA autosomal testing, which they call Family Finder.  The regular price is $289.  The coupon price is $179.  They are only good once and before June 10th, so hurry.


Sunday, June 3, 2012

Woodland Cemetery, Newark, New Jersey


Yesterday was the annual Safe Day at Woodland Cemetery in Newark, Essex County, New Jersey.  Thanks to Mary Lish and John Sass for their coordination and help.  It was great seeing everyone!  After a stormy night, the clouds cleared.  The ground was soggy at first, but soon dried under the hot sun.

Woodland Cemetery was established in 1855 and holds over 80,000 burials.  The annual Safe Day allows volunteers to photograph and record gravestone transcriptions and guide the public in locating graves of loved ones.

Woodland Cemetery, Newark, New Jersey
Woodland Cemetery, Newark, New Jersey

Using a weedwacker to uncover these stones from ivy.

Using a metal detector to locate buried treasures.



Spoon found buried at the cemetery.  Silver-plated copper alloy.
Engraving on spoon.