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AncestryDNA, 23andMe and FTDNA use centimorgans to compare DNA matches

What Are centiMorgans and How Do You Use Them to Find DNA Matches?

When you get an autosomal DNA test whether from AncestryDNA, 23andMe or Family Tree DNA, you can use the results to find possible DNA matches.

All genealogical DNA testing services use centiMorgans to estimate (emphasis on ‘estimate’) how close you are with someone else. Depending on the number of centiMorgans across your shared DNA segments they could be close family members such as a parent or grandparent or a relative further away such as a second cousin.

So what exactly is a centiMorgan (abbreviated as cM) and how do you use it to find and analyze DNA matches.


Recombinant DNA
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Older fathers pass on more mutations & a 23andMe health review will not show these potential mutations

Why Men Should Father Children Earlier to Avoid Passing on Genetic Mutations

When is the best time to have kids?

For many people it depends on a wide variety of factors including career trajectory, health and culture. But science generally recommends doing it earlier.

For women fertility is obviously a major reason for doing it when younger. There is also the increased risk of complications like ectopic pregnancy, stillbirth and miscarriage.

But it’s not just women who should be worried about getting kids later in life. Men too have a ticking biological clock.

Scientists already know that older fathers have a higher risk of bearing children with psychiatric disorders such as schizophrenia, … Read the rest >>

Who are the genetic Adam and Eve - can't be traced via Family Tree DNA

Tracing Human Geneology: Who Are The Genetic Adam and Eve?

Genealogy testing services like Family Tree DNA and AncestryDNA can only get you so far into the past. Autosomal DNA testing for instance, the most popular type of DNA test, can only trace your ancestry up to your second cousins.

To study the human lineage much father back tens of thousands of years ago researchers have had to use more advanced methods like genome sequencing and restriction mapping.

In 1987 they struck gold.

They analyzed the mitochondrial DNA of 147 people drawn from five different populations around the world.

Mitochondrial DNA is passed down from mother to son and … Read the rest >>

DNA is a vast and complicated structure

Common Questions on DNA Genealogy Testing (FAQs for Beginners)

What is the best DNA test? What will a genealogy DNA test tell me? Can I find my relatives using a DNA test? Here are quick answers to common questions on DNA genealogy tests for those who want to trace their ancestry and find family matches.


Can a DNA test help me discover my ethnicity?

Yes it can.

DNA testing companies have huge databases (usually with more than a million individual DNA results) with DNA data from different populations around the world.

When you take a DNA test, they will match your DNA sequences against those of the different … Read the rest >>

23andMe, FTDNA and AncestryDNA, the three best DNA tests, all allow you to delete your DNA data

An Online DNA Database Helped Capture the Golden State Killer. Should You Be Worried About the Privacy of your DNA Data?

A decades-long search for the Golden State killer finally led to the arrest of a suspect with the help of an online DNA database. But it raises many questions on how much privacy we are giving up when we use genealogical DNA testing websites like and AncestryDNA.

Police suspect he has raped more than 50 people and killed at least 12. Dozens of bulgaries have also been linked to him. But for over four decades, Joseph James DeAngelo also known as the Golden State Killer, managed to elude investigators.

A break in the case came when one of the … Read the rest >>

Dog DNA Test

Best Dog DNA Tests Compared

Are you planning to buy a DNA test for your dog or pet soon?

Then you’ve come to the right place!

DNA testing services for pets, especially dogs, have become super-popular in the last few years.

Today, there are dozens of companies helping pet owners identify the breeds of their dogs and diagnosing genetic diseases.

Leading DNA Test Brands for Pets

While there are many companies offering dog DNA testing today, we are going to focus on the three most popular and highest-rated brands in this guide:

To help you cut … Read the rest >>

Genographic Project Review

thegenographicprioject ancestry DNA test logo

A couple of years ago, National Geographic partnered with FamilyTreeDNA to create a unique global ancestry DNA test called Genographic Project 2.0, otherwise known as “Geno2.0”.

The Genotyping Chip Photograph by Becky Hale National Geographic

The goal of the Genographic Project is to map the ancient genetic history of as many people as possible using a custom DNA test that leverages autosomal, Y-chromosome (paternal) and mitochondrial (maternal) DNA tests.

Unlike “actionable” genealogy tests from FamilyFinder, AncestryDNA and 23AndMe, the objective of Geno2.0 is on understanding your ancient genealogy – not on finding lost relatives or connecting with distant cousins.

Indeed, the Genographic Project is best-in-class at revealing your ethnic makeup and where your ancestors lived 300,000 Read the rest >>

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