Copyright 2004 Ken Greenebaum
Eye
Evolution this week in Journal Science
nCiliary
photoreceptors with vertebrate-type opsins in an invertebrate
brain
nPlatynereis
dumerilii
n'living fossil,‘ (a marine worm)
nlight sensitive Opsin molecule
nSame as the human/vertibrate Opsin
nIndicates
a common evolutionary ancestor