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Banana trees that's used commercially are cloned by taking off-shoots, and are sterile. It's quite hard, if not impossible, to alter their genetics. Likewise it's hard to breed new banana trees that produce suitable fruits.


They don't really seem to be sterile, rather just highly unlikely to get offspring: http://en.wikipedia.org/wiki/Panama_disease#Banana_breeding_...

It seems that with each meiosis step the banana plants become less fertile.




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