Testing #dna


Arline and Sidney Sachs
 

Errol Schneegurt asked if he should take the DNA testing for himself if he
already did both of his parents. For genealogy only, to do it will be a
waste of money. However, he should have his father joined his Y-DNA
haplogroup project and then maybe have his father DNA tested for some
SNPs. The reason for this is to match males, you are looking for the most
recent common mutation that them both have and it may be a SNP mutation
and not a STR marker mutation.

Sidney Sachs
Lorton, VA


Jackye Sullins
 

You haven't mentioned the autosomal testing. That's a completely different
test and will tell give you a general breakdown of your DNA make up as well
as match you with others with the same results - up to about 4th cousins
with some degree of accuracy.

Jackye Sullins


Adam Cherson
 

Dear Errol,

I believe you are referring to an autosomal (large proportion of the
entire genome) test of both parents and one that includes the Y
Chromosome for your father. If so, then for genealogical research you
don't need another test for yourself since everything that is in you is
in them. The only thing which is new about you is the particular mixture
of their genes plus any recombination or mutation alterations that may
have occurred uniquely in you.

If your testing has not provided the ancestral haoplogroup result for
both your mother and father I would try to see if that can be added.
Haplogroup information has some limited but pretty interesting uses. If
you have your parents' haplogroups you have yours (without the need to
test yourself).

Using prior generations, provided these can be tested, is in fact a
better way of researching your own genealogical history since your
parents dna includes more information about their respective ancestries
than does yours.

Good Luck,
Adam Cherson

---
From: eslviv@aol.com
Date: Mon, 11 Dec 2017 08:45:50 -0500

I did DNA testing for most of my family but never did my own. Since I
did my father and mother to the highest level including the "Y"
chromosome. Is it necessary that I do the same.
I am a male.
Errol Schneegurt


charles goldenzon
 

Errol,

For YDNA, if you tested your father, there is no need to test yourself.
If by highest level you mean 111 markers, fine. Otherwise, if you tested
for 37 or 67 markers you can still upgrade his test to 111 markers. This
will serve to narrow down his match list and put a "most recent common
ancestor" within fewer generations.

For mtDNA, if you tested your mother, sibling or maternal uncle/aunt,
there is no need to test yourself. As your mtDNA was passed down by your
mother, if you want to investigate your father's maternal line, you can
test or upgrade your father's sample for mtDNA. The highest level here
is the mtFull Sequence.

As for atDNA, if you tested both your parents there is no need to test
yourself.

Regards,

Charles Goldenzon
Rio de Janeiro, Brazil


Errol Schneegurt
 

I did DNA testing for most of my family but never did my own. Since I
did my father and mother to the highest level including the "Y"
chromosome. Is it necessary that I do the same.
I am a male.
Errol Schneegurt ESLVIV LI NY