Hello there,
Came across this weblink whilst searching for an explanation on mutations for a friend.It's very good and very informative, the only thing is that it's all in welsh which might be a problem for beginners.
Otherwise I hope it helps someone and if anyone needs a little help with the welsh or finding their way around the site, I'd be happy to help out.
Bendithion!
Sam
http://users.aber.ac.uk/bmj/Tr/Cym/tr_cyflw.html





