True in theory, but unlikely to the point of irrelevant.
Assuming chromosomes are inhereted whole, the probability that siblings share less than 25% DNA - the equivalent of one further generation away - is 0.00531 (0.5% chance).
But chromosomes are not inherited whole - they recombine. This hugely reduces the probability even from that start point.
Assuming chromosomes are inhereted whole, the probability that siblings share less than 25% DNA - the equivalent of one further generation away - is 0.00531 (0.5% chance).
But chromosomes are not inherited whole - they recombine. This hugely reduces the probability even from that start point.