Interpreting shared DNA information from FTDNA test

How do you interpret Y DNA results?

Y-DNA results have no real meaning when taken on their own. The value comes in comparing your specific results, or haplotype, with other individuals to whom you think you are related to see how many of your markers match. Matching numbers at most or all of the tested markers can indicate a shared ancestor.

How do I read my family tree Y DNA results?

Quote from video: There might be one or two small changes in that y chromosome. And that is going to show that our branch of the family branched off from another branch of the family you know 10 years ago.

What does genetic distance mean on Ftdna?

Genetic Distance is the number of differences, or mutations, between two. sets of results. A genetic distance of zero means there are no differences in. the results being compared against one another, i.e., an exact match.

What does a 67 marker match mean?

A 63/67 or 64/67 match between two men who share the same surname (or a variant) means that they are likely to share a common ancestor within the genealogical time frame. The common ancestor is probably not extremely recent but is likely within the range of most well-established surname lineages in Western Europe.

How many generations does Y DNA go back?

How many generations does a Y-DNA test go back? Y-DNA testing can tell us information about our ancient direct-line paternal ancestors going back as far as about 60,000-100,000 years, similar to mtDNA testing, and can help us learn about recent direct-line paternal ancestors going back as far as about 1,000 years.

Do fathers and sons have the same DNA?

Each son receives DNA for his Y chromosome from his father. This DNA is not mixed with that of the mother, and it is identical to that of the father, unless a mutation occurs. It has been estimated that a mutation occurs about once every 500 generations, or every 15,000 years, give or take a few millennia.

Why do Y DNA matches have different surnames?

A Branch of the Family Adopted a Different Surname

Another common explanation for unexpected matches with different surnames is that either your or your DNA match’s branch of the family adopted a different surname at some point.

What does 25 DNA match mean?

Centimorgans (cM) are units of genetic linkage between two given individuals. For example, if you share 1800 cM with an individual, that means you share around 25% of your DNA with them. A strong match will have around 200 cM or more.

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