Their names differ, for example. And it's Fred, who dies in the end.
In Harry Potter and the Deathly Hallows, Fred dies when a the castle collapses on him at The Battle of Hogwarts
Wesley Snipes is the son of Marian and Wesley R. Snipes.
Wesley Barker's birth name is Wesley Alan Barker.
Barbara Wesley's birth name is Barbara Lee Wesley.
when wesley dies
The other twin is unlikely to survive.
no alison is alison. she never dies her twin did.
Their names differ, for example. And it's Fred, who dies in the end.
it dies
Depends on how they were conjoined.
No I don't think so but that would be cool!
Fred Weasley dies in the Final Battle.
Fred Weasley dies at the hand of a death eater in the prescence of his two brothers Ron and Percy, as well as Hermione and Harry.
Yes, as of today 5/23/14 Les's twin brother Wesley is alive and well.
No, Mona is A at first. Then Mona dies and Alison takes Mona's place in being A. Alison never dies, her twin sister did.
The dead twin will be still-born and will have not effect on the remaining twin. You do need to speak to your OBY/GYN for more detailed advice.