Your link goes nowhere. Your source’s references go to dead web pages.
http://www.thingsyoudontneedtoknow.com/dnabananas.html
It cites Steve Jones, Professor of Genetics at University College, London as saying this.
Here's another link to an interview with him where he mentions that:
http://www.abc.net.au/rn/science/ss/stories/s456478.htm