nonon the way paradox clones work with the ectobiology shit is that basically jane is both jake's grandaughter and grandmother because homestuck. but that does mean that psifreezo is right in that SOME of the wectothigns have no parents. But Becquaral and Doc Scratch don't have paradoxical origins.

Jane and Nanna were the same baby. 

The baby was sent to two different points in time in two different universes.

One grew into Nanna and was cloned to create the baby in the first place.

The other grew into Jane.

Doc Scratch does have paradox origins.

Sn8wman ectobiologically made Doc Scratch

and without Doc Scratch Sn8wman wouldn’t have known how to do that, therefore creating a paradox

~Mod T