There are lies, damn lies, and statistics.

It isn't a matter of 'far back enough', as obviously any proliferation of Khan's genes couldn't have occurred before his birth.

Males can find out by having a genetic test done, as they are the ones with the y chromosome, which works sort of like mitochondrial DNA in this case, because each son inherits a y chromosome identical to his father's. If you have any male relatives who are in for it, he could find someone doing a study on this phenomenon and enter it, that way the testing would be free for him.

BTW - I don't know where you got your numbers, As far as I'm aware, the chromosome in question would not be prevalent in European populations - Good ol' Genghis never conquered Europe. I think it's 1 in 200 men worldwide, a proportion I'd imagine would be roughly covered by the proportion of men in Asia who are descended from him.

Okay, let's count how many times you've asked this same question…

Now, are you just looking for 100 people to jump out at you and tell you YES! You ARE descended from Genghis Khan! I could have told you that.

What more reassurance do you need?!?!?! Maybe you should go to a genealogical society if you are so curious!

well since khan technically conquered eastern europe aka the baltic states and monogolia, he only strayed a bit into europe. you may be but it is not how far back you can trace your fathers genetic make up, the midocondrial dna-MRNA are passed down through the maternal line, those are passed to offspring whether you are male or female, so if someone on your moms moms moms side was related to them then yes you are. so technically your mrna should match khans and his mothers and grand mothers. due to statistical variation, it is unlikely that you share more than the most common genetic traits with khan, sorry to break your bubble.