LOL, these are the kinds of questions that must be ignoooooooored :D The story doesn't work if you apply logic, sadly.
The clones, to my mind, weren't prematurely aged. I didn't actually create a legit explanation for this, but as a mental process I assumed that the Stargate program had been going on for about 35 years, way longer than it has in canon, and the ATA-gene was discovered in Sheppard when he was about eight. They would have been doing blood draws on him, which netted them his DNA, and that DNA was used in a "cloning" procedure (which actually would not have been true cloning, but w/ever).
So Neal would have been the first successful clone, born when Sheppard was around ten. (I also, mentally, gave him a twin brother, who was raised as Bryce Larkin, but I felt that would be pushing the fandom injoke a bit far to mention it). He's 30 at the time of the story. Gwen would have been next, age around 28, followed closely by Ianto and Zane (about the same time, so age roughly 26) and then Tim, whose age I don't know in canon but who I picture as 17.
no subject
The clones, to my mind, weren't prematurely aged. I didn't actually create a legit explanation for this, but as a mental process I assumed that the Stargate program had been going on for about 35 years, way longer than it has in canon, and the ATA-gene was discovered in Sheppard when he was about eight. They would have been doing blood draws on him, which netted them his DNA, and that DNA was used in a "cloning" procedure (which actually would not have been true cloning, but w/ever).
So Neal would have been the first successful clone, born when Sheppard was around ten. (I also, mentally, gave him a twin brother, who was raised as Bryce Larkin, but I felt that would be pushing the fandom injoke a bit far to mention it). He's 30 at the time of the story. Gwen would have been next, age around 28, followed closely by Ianto and Zane (about the same time, so age roughly 26) and then Tim, whose age I don't know in canon but who I picture as 17.