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Introduction to DNA for Genealogists

Introduction to DNA for Genealogists

Introduction to DNA for Genealogists Outline
A. The Concepts In the category of Genetics and Genealogy
1. What are we Trying to Accomplish ?
2. Does Not replace Traditional genealogical research
3. Family Tree DNA (Family Finder, Y-DNA Testing, Full Mitochondrial Sequence
4. An Example of STR Y-DNA genealogy
5. AncestryDNA (genetic ethnicity, relatives matches)
6. 23andme.com (Ancestry Composition, DNA Relatives)
7. Do the tests tell us who we are related to?
8. , How do they work ?

B. What are we measuring?
1. What is DNA ? What is a chromosome ?
2. We measure errors and size
3. There are two ways of measuring them; STR , SNP
4. STR DNA Measurements
5. SNP DNA Measurements
6. SNPs accumulate over time

C. Y Chromosome
1. Males have a Y Chromosome Their father gave them
2. All direct line descendant Males have the same Y Chromosome

D. Who wants your Business
1. What are the companies offering you?
2. Where did you come from ? When ?
3. Where did my ancestors come from?

E. African Ancestry
F. Ancestry DNA
G. 23andME
H. Family Tree DNA
I. New SNP Tests (Big-Y, WTY, Full Genomes)
J. Britains DNA
K. Full Genomes
L. How to use it
1. 1st a genealogist needs to know the Y-DNA test and how to use it
2. 37 Y-chromosome STR markers
3. How to interpret Y-DNA results
M. What is a surname study ?
N. What have I learned with DNA
1. The results of a 37 Y-DNA study as proof
2. Working with Autosomal DNA
3. Third party tools like gedmatch.com
4. Y-Utility: Y-DNA Comparison Utility
O. Johan Casber Rötter Ship Edinberg 1750 Philadelphia
P. I want to be related to this Family


11 thoughts on “Introduction to DNA for Genealogists

  1. My father was half irish half indian mohawk. My mother is half italian half polish. I favor my fathers side because i look just like him plues i feel a bond with my indian blood.

  2. I dont do dna tests and i dont beleve whats documented if ot counterdics what ive been told.

  3. Unless your adoted or unsure who one of your parents or grandparents are and so on. A dna test is most useless in geneoulgy

  4. jim rader says:

    try the 4 new lectures on Y-DNA "intro Y DNA STUDY -class #1 – #4

  5. Good presentation, but a lot of outdated information now.

  6. I can't believe how many people do a DNA test and have not tree up.

  7. separate tests would be different because they're working from different databases, it's still able to identify you as broadly european, not too mention many european countries could be very similar genetically. also it is reasonable that the ancestry test would be different three years later, they have a larger database to work with to make the results more accurate than previously before. In early 2014 ancestry had 400,000 genotyped members, whereas by mid 2016 they had 2 million genotyped.

  8. hi jim, love the video. anyway, you said that you wouldn't use dna ancestry tests to find out where your family came from or what ethnicity you are. now my question is for the former of your statement. would you not say that the tests are not at least useful on a continent wide scale? because all of your test results for the most part had the european aspect similar. say someone knew the limitations of the testing but they were only trying to see where at least some of their ancestry came from continent wise like europe or africa. is the testing pretty good for that?

  9. Hi Mr. Rader,
    I sent you a message via your e-mail address listed in the post you made regarding living descendants of Johan Casber Roetter. He was my 6th great-grandfather. I am also researching and learning how to research my family history and genealogy. I have lots of books, including a copy of a first edition full 7 volume set of The Compendium of American Genealogy. I hope I can help you!

  10. This has been so helpful. Thank you for sharing this.

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