Those bumps you're talking about are probably pubic hair follicles. Nothing to worry about, they may or may not have a hair in them and we've all got them. On your other question, I think what you're talking about is just the left over "evidence" from the cell division etc when your equipment was developing. If you look closely you can probably detect a line like that down the middle of your scrotum as well. Nothing to worry about, just part of how you were created!
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Penis dots/lumps 
Linear Mode
