I don't get all the fuss here. To suggest that fully formed DNA would come from space is reaching way beyound what evidence we have.
And, of course, abiogenesis made use of compounds from space. Everything here came from space! Geez.
It is interesting that the early earth could have gathered up a number of useful small molecules after they had formed in space. This allows for very large quantities of them very early in earth's history. Beyond that I don't think it is anything to get very excited about.
What would be interesting is what would the density of the sugars (for example) be, would they be caputured or be pushed away when the solar wind fired up? If they form in space is it necessary they came from there? Why can't they have formed here as well?