These lines are invisible but many inherited and acquired diseases of skin manifest themselves according to these patterns creating the visual appearance of these lines.
“These lines are only visible in those with a mosaic[1][2][3] skin condition or in chimeras where different cell lines contain different genes.” So yeah click bait article
Have you considered that maybe they are visible in the UV spectrum? Cats can see different frequencies that humans can’t see. The Wikipedia article does not confirm nor deny this.
Well if an animal sees different electromagnetic radiation frequencies than we do then it’s possible that our complexion would appear different (and maybe in some manner of pattern) to said animal versus a human. It’s possible our melanin responds in patterns that are noticeable under other em frequencies outside of what our eyes perceive as light. I imagine this could be tested with equipment sensitive to em bands outside human visual perception.
slrpnk.net
Oldest