I read an article in my local paper where there had been a fairly extensive research done as to where did the Scots come from and where did the Picts go.
Apparently the only place in the world where you find Scots DNA is in Argyll and up the West and Ireland the only place to find Pictish DNA is in Perthshire Angus Fife and Aberdeenshire where 1 in 5 males carry the Pictish gene. There is some spillage in the north of England and the North of Ireland around just less than 1 percent. Viking DNA is found pretty much all round these islands with most in the northern isles. So i suppose it just goes to prove that the Picts didnt disappear they are still very much with us today. But if you carry either it pretty much will make you unique with a fascinating throw back to history of what makes you who you are. The research primarily was to find these two genetic codes but many in Scotland will carry a mixture of both codes i presume but i am no expert on genetics.
Its fantastic what all this modern science can do and prove into what makes you and where your people came from.
You are correct there is a lot of things that go to making you what you are, the article I referred to was mainly looking for a specific gene code that was unique to Scotland. Pictish Scotland is a particularly interesting period mainly because the left so little clues about there lives and if it wasn't for the Romans who give them a very unfair press the Irish anuls and the venerable Bede we would hardly anything about them. Some English bard called Shakespeare wrote a play about a king called McBeth who was the last Pictish king and he made him into a bad guy when in fact he was one of Scotland's best Kings who reigned for over 30 years and was the only Scottish king to visit Rome.