"Ever wonder how you plant a banana tree (which isn't actually a tree)? Where are the seeds? Wild bananas are actually like bean pods. Inside the peel, they contain large seeds in the flesh. The bananas we eat (known as the Cavendish banana) is a sterile mutant that does not produce seeds and instead produces a sweeter fruit.
So how do we get new banana plants? By using shoots to create clones. Thus all bananas you eat are clones of a horrible mutant abomination. The problem here is that because they are genetically identical and are cloned, they are unable to adapt. A bad disease that thrives on Cavendish bananas could potentially wipe out the entire species.
The same applies for navel oranges. Horrible mutant clones. Oh, and that lump in a navel orange is its undeveloped fetal twin. Delicious."