Found a pic of one starting a new tap root.
Thats not realy a taproot, its just cleverly had a section of the fresh cells exposed enough to get one root, but as you can see there are other root sites setting in around it. Rooting will branch from all those sites and more will pop out of that part of the stem till it almost pops/splits open with roots. Its beter with clones to get more root sites not less, the clone is going to grow stronger and faster. The hormones on the cutting will always react slightly difrent to a new born seed that straight away pushes its self upwards and downwards starting development from scratch, you wont get that with a cut straight away. Clones branch difrently cus of this too. The tap root is actualy the plant groing a single line upwards and downwards, out of the soil and into the soil. When it gets to a certain stage it branches in the soil, and when it getts to a certain stage on top it changes and starts alternating and branching diffrent, you wont get that from clone. The key with clones is to get them to push out as much root sites all over as possible on everything under the ground insted of one line. Its going to feed heavyier with many roots.
If you can pull out a cutting at the end of flowering and show it just has one extention going into the ground and all the roots branched off it then you could say you got a tap root. But that wont happen cus you can see other roots are already pushing out. The hormones are working diffrent at a seedling stage.