I'm being purely hypothetical, but let's work out a word problem.
So let's assume that there's some DNA in question, and that dna according to all 10 other calculations (assumed accurate) has a unique match number of 1 in 100,000.
Nobody ever asked if the defendant has a twin. (Again, assuming that an identical twin would have matching DNA which I don't actually know for certain).
Let's assume for simple math that in the real world twins occur 1/100 times.
Is the statistical uniqueness now 1/1000, 1/2, 1/50,000, or 1/100,000 or some other number.