Can a person be 70:30 say Irish:Russian or whatever, or does it always have to be 75:25 because of the math of having 2 parents, 4 grandparents etc?
I tried to do the math to prove it and could not. 2 parents, 4 grandparents, then 8, then 16 etc etc. I thought I needed to find a number that is to the power of two, but also divisible by both 7 and 3 for the hypothesis to be correct. Please can you help with me with a mathematical answer? Thank you.
Thank you for that, sorry, I should have been more mathematical in my first question (though that is why I posed my question to a math expert originally!) Shall I wait to hear from someone else, or should I re ask the question? Thanks so much for your help, Helen
Thanks so much!
Hello,Just wanted to interject that there is little likelihood of finding a mathematical formula unless all of your ancestors are 100% of either Irish or Russian extraction. So far, I've never come across such a family.
How about the grandmother whose maternal parents were from Germany and Russia and her paternal parents were from Australia and Ireland? Or the grandfather whose parents were from Scotland and Brazil on his mother's side and Ireland and Scotland on his father's.
What I would like to do is just prove that it is possible to be 70:30 of some combination. If I could find one example where the math works, I would not care about the permutations/mixes historically. It need not even be realistic, just possible. My hypothesis, which I need to prove, is merely that it is a possibility, I am just not sure how to show that it should be technically/mathematically possible. Thank you.
I think I understand. However, with genetics, it has to be realistic and possible. Anyone can put together a formula that results in a 70:30 mix if there are no constraints on what is possible to happen.
You might be better off asking if it is possible to get a 70:30 mix of white and blue marbles.
I guess what I was trying to say is that I was just looking at it mathematically - the other side in the discussion was telling me it had to be 75:25 and could never be 70:30, so I do not mind what assumptions or parameters are used, I just want to get to where I can show that a 70:30 mix is theoretically possible.
Thank you - that's where I originally posted it! :)
Thank you - I will look forward to hearing from you!
Thank you so much for that, though I was hoping it could be proved! Thanks anyway though, now I know!