From tracking down useful information, to organizing your research, to sharing it with your family and friends - Pinterest just might be the genealogy research tool you've been missing.
Mark Orwig is the writer of the Genealogy Explained website, and he has created a neat graphic to explain the answer to the question posed in "Do Siblings Have the Same DNA?" I encourage all of my readers to read the entire article because the science is interesting and the "deck of cards" example is familiar to most of us. The graphic is: Pictures are always better than many words, and this graphic shows why siblings (assuming they aren't identical twins) may not have the same ethnicity estimate even though they have the same parents. In the graphic, there are four grandparents who have perceived ethnicities of: * Paternal grandfather: 50% Scottish, 50% Irish * Paternal grandmother: 100% Italian * Maternal grandfather: 100% German * Maternal grandmother: 50% Italian, 50% Irish Based on the percentages, one would expect the ethnicities of the parents to be: * Father: 50% Italian, 25% Scottish, 25% Irish * Mother: 50% German, 25% Italian, 25% Irish Based on those percentages, one would expect the ethnicity of a child to be: * 37.5% Italian, 25% German, 25% Irish, 12.5% Scottish. However, the graphic shows that the two children have significantly different ethnicity estimates (based on a DNA test) than the expected ethnicity based on the expected ethnicity of the parents. This occurs because of the random nature of admixture - how the DNA segments are passed down to the next generation. For me, I have noted that the six different ethnicity estimates I have received are completely different, and do not match my perceived ethnicity based on classical genealogy research. See Comparison of My Autosomal DNA Ethnicity Estimates. I understand better now that I need to test my two brothers and both of my daughters to get a better handle on the ethnicity estimates for my family members. Unfortunately, I did not have the opportunity to test my parents (who died in 1983 and 2002) and grandparents (who died in 1942, 1962, 1976, 1977). Like I said - Read the entire post! Thank you to Mark for permitting me to use the graphic in this blog post. ============================================== The URL for this post is: http://www.geneamusings.com/2018/07/genealogy-explained-do-siblings-have.html Copyright (c) 2018, Randall J. Seaver Please comment on this post on the website by clicking the URL above and then the "Comments" link at the bottom of each post. Share it on Twitter, Facebook, Google+ or Pinterest using the icons below. Or contact me by email at [email protected].
An article about researching the professions of the passengers who arrived onboard the Mayflower in 1620, using historical newspapers.
I came across this infographic from Got Genealogy? It offers some great reminders and advice to keep in mind when researching your family history. The reality with genealogy is that we may never ha…
10 genealogy research tips I wish I'd known at the start looks at mistakes made and how to avoid them when starting your family tree.
Internet Archive has made finding family history records simple by providing a specific portal dedicated to genealogy. At the time of writing, this free resource contained 129,580 items of valuable genealogical information, and it is continually growing.
This chart makes it easy to visualize so you never forget again!
This free genealogy search engine allows you to check hundreds of free family history sites for your ancestors at one time. Find vital records and much more.
These translations of common German genealogy terms can be a big help when researching your ancestors.
Have you ever heard of foot shape genealogy? It is a concept out of the 19th century that still has some adherents today. It is based on the belief that the shape of your foot can tell you one of five ancient ethnic groups to which your ancestors belonged. Here is what you need to know about it.
Scientists at Oxford University have found that modern Britain can be divided into 17 distinct genetic 'clans' (pictured) with the Welsh having the most DNA from the original settlers of the British Isles.
Your last name could be a clue to a family link to the aristocracy of days past, according to a study by American and British researchers.
Have you ever wondered what something like “Second Cousin Once Removed” means or what exactly is your relationship to a more distant relative? Well, this chart is one of the easiest to …
If you want to find out more about your family, download the life history questions and make time to interview your family members. Learn some fun facts.
The Y chromosome contains haplogroups that allow people to trace their family history and genes that control male development which may actually be disappearing.
If you are one of 42 million Americans with German ancestry, your surname could yield some interesting clues to your family history.
A blog about Irish, Scottish, Scots-Irish, Southern, history, folklore, the Faerie Faith, Second Sight, Big White Beard, historia celta,
If you’re a visual learner like myself, then you know maps, charts and infographics can really help bring data and information to life. Maps can make a point resonate with readers and …
According to a new study of unique last names, moving in or out of the upper class doesn't take just a few generations — it takes centuries.
