Why do bananas have small brown spots on them when they are ripe? Why does no other fruit do that?

Question: Why do bananas have small brown spots on them when they are ripe? Why does no other fruit do that?
- Keywords:
  banana,
  fruit
Asked by livvilivvilivliv to Anil, Blanka, Cees, Emma, Mike on 26 Jun 2012.
- Blanka Sengerova answered on 26 Jun 2012:
  
  Good question. The brown spots are where the banana has started going mushy which is the result of fermentation by microbes in the environment. The rotting and fermentation does occur in other fruits too, it’s just takes longer to start as these fruits are harded in the first place. But why that makes them more resistant to rotting, I’m not too sure.
- Michael Cook answered on 26 Jun 2012:
  
  This was a really interesting question! I had no idea about this – thanks Blanka!
- Emma Trantham answered on 5 Jul 2012:
  
  I didn’t know the answer to this question either so thanks Blanka 🙂

Question: Why do bananas have small brown spots on them when they are ripe? Why does no other fruit do that?