that's fine!
I'll make a planet.
I just realized, er, a while ago I realized that we're gonna want to start with a planet that can support the same stuff as earth, because non carbon based life-forms would be difficult.
of course, if the same asteroid of biology hits another planet it'll have to be a life-form that is the same type as the other planet that had a similar asteroid. for example, a carbon based life-form. If it survives, then it's still a caarbon based life-form, but the other planet will be different, as it will have to add matierials that normal carbon based lifeforms won't use, but it's still a carbon BASED life-form.