Two plants from one seed ?

[Rufuss]

Planted a perfectly normal looking seed and few days later two plants sprouted from the same jiffy pot. I have just potted them into a larger pot and tryed to seporate them but they are joined at the root base like conjoined twins.
Has enyone ever seen this befour and if so what can I expect to happen as they grow or is there enything I should do to them? Thanks in advance for advice and comments
Should also add one plant was quater the size of the other

 

[Vindicated]

Since one plant is weaker than the other I say cut the weak one

 

[TheDudeNextDoor]

So is this like the fetus-face nurse on South Park?

 

[Rufuss]

So is this like the fetus-face nurse on South Park?

LOL yer pretty much one normal sized seedling with a litle one atached at root base growing out the side. Would love to post a pic but ive got no cam and not to computer savy