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Messages - pughcd

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10
Ancestral Family Tree DNA Testing / Re: Good books on DNA Inheritance?
« on: Monday 17 April 23 16:56 BST (UK)  »
Quote from: dtlroots on Sunday 16 April 23 23:49 BST (UK)
Thanks to you all for your recommendations.
I was considering both of the books mentioned and will proceed with added confidence.
The other book I found on Amazon was 'Tracing Your Ancestors Using DNA: A Guide for Family Historians' by (Graham S. Holton).
Do any of you have a view on this?


This was the the book recommended by phil57. I have used it but much prefer the Blaine Bettinger book. The book edited by G. Holton is a collection of chapters written by various DNA experts. Mr Graham Holton BA is Principal Tutor & teaching fellow at the Centre for Lifelong Learning, Strathclyde University. Dr Blaine Bettinger has a PhD in Biochemistry specialising in Genetics. He writes the Genetic Genealogist blog. Both books are great resources.

pughcd

11
Ancestral Family Tree DNA Testing / Re: Good books on DNA Inheritance?
« on: Sunday 16 April 23 20:21 BST (UK)  »
I think that the best genetic genealogy textbook is the 2nd Edition of Dr Blaine T. Bettinger's "The Family Tree Guide to DNA Testing and Genetic Genealogy", 2019. The diagrams and chapter layout is excellent. You could also check out Blaine Bettinger's YouTube channel. There are other online experts such as Debbie Kennett and Dr Maurice Gleeson.

pughcd

12
Ancestral Family Tree DNA Testing / Re: Help With Grouping Matches
« on: Monday 20 March 23 12:49 GMT (UK)  »
Hi Vi5,

If you are looking for help understanding shared and overlapping segments it is worth reading around the subject. Blaine Bettinger's blog is an ideal starting point.

https://thegeneticgenealogist.com/2016/06/19/a-triangulation-intervention/

13
Ancestral Family Tree DNA Testing / Re: Ethnicity query
« on: Tuesday 20 December 22 16:34 GMT (UK)  »
Hi Glamwales,

So you appreciate that ethnicity is an estimate but you need to delve deeper into your results. You say that you are 7% Germanic but if you look at your results on the website you may notice that the 7% is  an estimate within a range. My Germanic is 36% but it can range from 30-52%.

If you check your parents results you will get a range and this is how you may appear to be slightly more Germanic than they are.

pughcd

14
Ancestral Family Tree DNA Testing / Re: Repeat Testing of Same Person
« on: Tuesday 13 December 22 15:07 GMT (UK)  »
Hi @Wexflyer,

With regards your original post on repeat testing. It is not always possible because testing platforms are continually updated. For instance; Ancestry has used a new microarray Chip v2 since 2016.
https://isogg.org/wiki/AncestryDNA

23andMe is now on Chip  Version 6.0. (June 2020).
https://customercare.23andme.com/hc/en-us/articles/218392668-Upgrading-to-23andMe-s-Newest-Chip-Version

https://isogg.org/wiki/Autosomal_SNP_comparison_chart
pughcd

15
Ancestral Family Tree DNA Testing / The Shared cM Project 4.00 tool v 4 with option to add a second amount.
« on: Tuesday 29 November 22 17:14 GMT (UK)  »
The DNA Painter website (Jonny Perl) has a new feature that allows you to enter two related sets of data in the Shared cM tool. Has anybody used this new tool yet?

There is a Blog post by Blaine Bettinger on the new feature. https://thegeneticgenealogist.com/2022/11/12/leveraging-the-power-of-siblings-and-cousins-to-narrow-relationship-possibilities/

pughcd

16
Ancestral Family Tree DNA Testing / Re: FAILED ancestryDNA RESULTS "WHY" ? ?
« on: Wednesday 26 October 22 16:47 BST (UK)  »
If someone is struggling to get a valid saliva sample for Ancestry DNA or 23andMe because of an age related or clinical condition, I would recommend using another company such as Family Tree DNA or My Heritage that uses a cheek swab instead.

It is a common enough problem but can be overcome.

https://www.yourdnaguide.com/ydgblog/dna-test-no-saliva-spit

pughcd

17
Ancestral Family Tree DNA Testing / Re: Rate of occurrence of close matches with Ancestry DNA
« on: Friday 07 October 22 22:17 BST (UK)  »
Yes indeed!

My own results are low because I am half German, a quarter South Asian and a quarter English.

pughcd

18
Ancestral Family Tree DNA Testing / Re: Rate of occurrence of close matches with Ancestry DNA
« on: Friday 07 October 22 22:05 BST (UK)  »
Hi Gordon,

OK so my figure is 1.09.

The others are 1) 3.00, 2) 1.98, and 3) 1.49.

Hopefully some US Rootschat members will provide you with their data.

pughcd

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