Is this normal for a clone

From seed plant on left and clone on right. Clone is 20 inches right now, is it normal for it to look like a big clone or should it look like the normal bushy plant on the left?

Pretty normal. Also depending on strain but once a plant reaches maturity it will alternate its nodes, which is what you see. Looks a bit stretched too.

Normal. May be a sativa which are taller, not as bushy and tend to stretch more

Definitely stretched. Want to move light closer but am worried this is from heat stress?