DNA Comments and Questions
Most recent comments and responses. Africanamericangenealogydna.com
Comparing Kit 130690 (*Valerie C.) and 250893 (*Marine W.) Alphanumerical number excluded.
Minimum threshold size to be included in total = 300 SNPs
Mismatch-bunching Limit = 150 SNPs
Minimum segment cM to be included in total = 3.0 cM
Chr Start Location End Location Centimorgans (cM) SNPs
8 41,846,352 53,127,075 3.7 399
Largest segment = 3.7 cM
Total of segments > 3 cM = 3.7 cM
1 matching segments
402014 SNPs used for this comparison.
Comparison took 0.03957 seconds.
Ver: May 24 2017 20:18:13
Response. A match too far below the threshold that it can be a false read. 7 cM’s 1000 SNP’s is the normal depending on testing company math formula used to calculate relationships.
ok, here goes…My grandfather was Harold L, b 1900 in Missouri or possibly Nebraska d 1974 in Big Spring Tx. His father was William S b June1856 in Iowa City Iowa. Grandpa’s mother was Lorretta M b 1866 in Illinois.
William S parents were William & Caroline . Loretta’s parents were Thomas C and Hanna Alma . Looking for any help for more info on this line. We have all been stumped for years. Please and Thank You
Answer: I teach you to do the work and to learn the subject matter. If I give you the answers what have you learn, what can you tell others about how you did the research? How vested are you in finding the answers?
Why would my number of matches at 23andMe be dropping? I had 1044 matches a few weeks ago, and now I have 1011; the total drops by a few to several at a time. I don’t seem to be missing any of my closest matches.
Answer: The algorithms used to determine matches has improved with each passing day. Meaning mathematical formulas design to search populations in specific areas, ethnicity, known data factors in the database such as location, surnames, known other relatives you have in your tree, and with 23andMe known health factors. Sequencing is done 100’s of time separating SNP’s to get down to known possible matches. then the sequences look for comparable cM’s on Chromosomes. This sequencing is done in seconds and the results are what you get. It is not an exact science.
Questions or not a question?
I have 4 new dna matches all managed by one person. So I messaged them yesterday letting them know they are matching my brother and I and so it is on my mothers side (since my brother and I have different dads). Well the person messaged me back today and said this “my mother is 93 years old and you match her, my sister and my sisters 2 daughters. Both grandparents on both sides my mom and my dad are from India. My mom was born and raised in Panama but we have lived in St. vincent and Barbados and currently live in Trinidad. I hope this helps you.” His 93 year old mother and I share 12cM. Her admixture is South Asian. His sister shows South Asian and Native American. The 2 daughters show South Asian, Native American and Mali.
My mom shows 1.5% Native American and 1.5% South Asian, 86% West African and 11% Irish.
The cousin match managing all 4 kits has shared with me that their grandparents from both his maternal side (who my brother and I are matching) and his paternal side are from the country India. Now my question becomes…how did they get from India (his mother is 93 years old) to Panama??? Second to that, this confirms we have a shared set of 4th great grandparents. Who were they?
Answer: Africans were sent to India as slaves from Madegassee, Yemen, South African, and served the British empire, afterward there was a need for labor to work on the Panama Canal,.Indians came to work on the construction of Panama Railways and later Panama Canal in the early 20th century.” Just as in Brazil they were abandon and left in Panama. So yes you can see how that can happen. Their DNA still exist there and in most of the Caribbean. From what we know, you most like have ancestors and living relatives in Mexico, and other South American countries. Good job, dig further using the Caribbean and South American resources available. Surnames would help a lot.
I have narrowed down my Malagasy connection to my 4th Great-Grandparents Adam Price who was born in Maryland and Catharine “Katie” Price who was born in Virginia. I have not found a death certificate for Adam or Katie, therefore I have not found Katie’s maiden name. Katie as born around 1815 in Virginia and Adam was born around 1810 in Maryland. Katie is listed as “Mulatto” on the census records. Does anyone have any suggestions how I can try to find Malagasy roots? Me, my mother, and sister have Southeast Asian DNA and I have DNA matches from Vietnam somehow. Any suggestions would be greatly appreciated.
Answer: Price is a surname found in Virginia, West Virginia and Kentucky. Katie may be a free woman of color and her father was most likely a slaveowner. ths is based on the information you provide. She was listed in the census of 1815. She would have been a free person. look for information on plantations in Henrico Co, Powhatan, Goochland, King William and James City County. No assurances. Ask around with relatives if there any Clays’ in the family. Be sure to interview everyone you can.
I did not change the wording of any author inquiry, it is their own as written.