Tag: mitochondrial DNA

Some 23andMe Stories About Moms

Alice found her biological mom after decades of searching, so did Cody and PJ. We’ve heard from many customers about how 23andMe helped them find their mothers, learn more about the mothers they never knew or simply see in their own DNA some of the things their mother passed on to them. Here are a few ...

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Mito Mightily Disappoints Autism Researchers

By Amick B. Research shows a strong genetic basis for autism, but for years scientists have been unable to pinpoint the specific genetic variants associated with the condition, which may affect as many as one in 88 children in the United States. For some time now researchers have speculated that ...

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Back to School: Sex Chromosomes Quiz Results

The 23rd Chromosome This month we’ve run a series of quizzes for the back-to-school season. Here’s are the answers to our third and final quiz. Congratulations to Toni K., who was selected randomly from the large group of test takers who got all the answers right. You can see how you did by comparing with ...

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Back to School: All About Sex… Chromosomes

We know you’ve been studying hard at 23andMe U., but you’ve still got one more quiz to complete. This one hinges on some of the genetic differences between men and women. So before you matriculate, here’s the last quiz. Now don’t sweat it, you’ll do fine and we’ll even give you some hints along the way to ...

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Thanks for the Mito Mom!

Mothers are special on so many levels. We cherish them for loving us and imparting important life lessons... and for giving us mitochondria (or "mito" for short)! Mitochondria are small, roundish structures inside of cells that produce cellular energy. They have "zigzag insides" and their own DNA, which can ...

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Ancestry at 23andMe: What Can You Learn?

Genetic testing is not a concept that most people encounter outside of popular TV shows and so when you hear about services such as 23andMe’s, you might be wondering what exactly it is you’re getting. Even after you’ve signed up and have your data back, you might not know where to start exploring or how to ...

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New Study on Genetics of Ethnic Groups Reveals We May Not Be So Different After All

There are many examples around the world of two distinct ethnic groups living side by side. Sometimes these groups co-exist peacefully. Other times they do not. Often two groups' differences - along with circumstantial factors - lead to tension between them and sometimes violence. The Hutus and Tutsis ...

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Recalibrating the Genetic Clock: Scientists Develop New and Improved Method for Timing Prehistoric Human Migrations Using Mitochondrial DNA

Just over 20 years ago, the first study using mitochondrial DNA (mtDNA) to trace prehistoric human migrations was published. In this seminal study, scientists managed to determine that all humans alive today can trace their maternal ancestry back to one woman who lived about 200,000 years ago in Africa. The ...

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One if by Land, Two if by Sea: New Genetics Study Indicates Multiple Paleo-Indian Migration Routes

It seems like new discoveries about the peopling of the Americas are a dime a dozen these days.  Without a doubt, the journey those first Americans took from the frozen wastelands of Asia down the Pacific coast into the Americas has been an active research subject for many decades.  Archaeologists, linguists, ...

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23andMe Scientists Offer Solution to Apparent Mutation Rate Discrepancy

This guest post is by Brenna Henn, a doctoral student in Stanford University's Department of Anthropology and a 23andMe consultant. Brenna studies human evolution using genetic information. Her interests include the origin of modern humans, migration patterns among African groups, and genetic models of ...

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