Ethnicity Percentages

[Pamela21]

I'm not saying they have a category for Welsh. It would come under GB. My research therefore shows 100% GB. I don't have any Irish in my tree, yet I'm 32% Irish.

[hurworth]

By Irish they mean Celtic. 

There's no Scottish category either.

[Spike H]

"Ireland" includes all the Celtic areas; Ireland, Wales, Scotland and Cornwall. It is a different "ethnicity" to GB.

[pharmaT]

If you look at the map (if it's ancestry) then 'Irish' DNA covers pretty much all of Scotland and a little bit of Northern England.

For those who wonder why they don't have higher percentages of a particular ethnicity there are 3 reasons it can be different from what you expect.

1) Ethnicity estimates are just that estimates based on averages, they'll hopefully become slightly more accurate as more data becomes available.

2) there has been a large pattern of migration over 100s of years so your DNA has been passed down from long before records were available.

3) Finally although we get 50% of our DNA from each parent you don't necessarily get 25% from each grandparent depending on how it the chromosomes divide when sperm/egg is formed and so on back through the generations.  This is also the reason full siblings can have a variation in their ethnicity estimates.

[Pamela21]

It seems that a DNA test tells you what you have inherited, not what your ancestors are. The two are completely different things. Your various ancestors may have DNA that you haven't inherited as an individual, so it is never going to give you a complete picture of your ancestral DNA.