Darth Caedus
Formerly Congerking
I don't get why this ship is following the seed ship either. My guess is that its one of the mysteries of the show. I'm not sure if the characters even know they are following another ship planting stargates.
My guess is that this is pre ATA gene technology. IIRC this ship is pre-Atlantis so that is a possibility.
Being the pre ATA gene tech was my guess as well. As to why they're following another ship....you got me there