One of the few unalloyed positives of my up-and-coming surgery is that i have had to be “blood typed”. That is, the nurse extracts a load of blood from my arm (no mean feat, given my exceeding and irrational fear of needles) and, along with other tests, they check up what blood type i am.
Which turns out to be B positive.
I like that. As i then tweeted: B positive – blood type and personal credo!
I also like that it turns out to be relatively rare (just 7-8% of the population have it) – though that raises a minor moral dilemma, since the NHS site also tells me that they desperately need B Positive donors.
So i mention this to andrea, who promptly checks her records and – well i never! she b b positive soon.
As is my daughter, Natasha.
Now what are the chances of that?
Intriguing. Purely at random, the chances of two adults coming together with that blood type are around 0.6% or 3 in 500. That assumes, of course, that blood type is not associated with some other genetic components leading to non-random association.
And to have a daughter with the same type? Hmmm. Not sure about how blood type is transmitted. I guess it is parental, in which case, there is a 50/50 chance of Natasha having the same type as me… and so the chances of THREE of us having that blood type dwindle to around 3 in a thousand.
Also cool that if any one of us has a major accident…we have two possible blood donors instantly to hand.