How is Wales represented on the Union Flag?

Answer 1

Short answer, if you're referring to the Union Jack, it isn't.

The red plus-sign is the symbol of England and it's also the symbol for Northen Ireland (I think). The white X and the blue background are Scotland's symbol, leaving nothing for Wales.

Kind of hard to represent Wales in there though; I don't think the flag would benefit from having a green bottom half and you couldn't really put the dragon in the middle, although I think it could look good!

--The red X is Nothern Ireland!