I didn't know a segment meant a chromosome so when you put it that way no, it is very unlikely.
I have heard of chromosomes doing odd things ie splitting and rejoining but not in regards to genealogy and I have no idea how that would show up. That situation is also rare.
I have really avoided the whole science of this dna testing. I know the higher the number, the stronger the relationship but the segments I haven't really understood.
__________________
Toni 
|