RE: The "Complexity of the Eye", for stupid creationists.
December 8, 2017 at 1:18 am
(This post was last modified: December 8, 2017 at 1:31 am by Anomalocaris.)
An empirical computer simulation suggests from a single light sensitive cell on the exterior of multicellular animal, a sophisticated camera eye similar to the human eye can evolve in half a million generations. At 2 year per generation typical of small multi-cellular animals, that’s just 1 million years.
Genetic evidence suggest the genes responsible for underlying light sensitive pigment that facilitates essentially all vision and light sensitivity in animals - rhodopsin - is 2 billion years old.
Any questions?
As it happens, not only do we see both camera eye like ours, and compound eye similar to insect and crab’s having each evolved at least once, there happen to be an entirely new lineage of eye, seemly entirely separate from the compound and the camera eye, that is being evolved as we speak. This is the external shell eye of the rimicaris exoculata shrimp. This shrimp has the genes for the normal compound eye found in typical shrimps. In juvenile stage the compound eye is there. In adulthood, the compound eye is reabsorbed. But a truly remarkable adaptation occurs. An entirely unique sheet of light sensitive cells grows over the shell on the shrmp’s back. In effect the shrimp transforms its back into the retina of a new inside out eye.
Genetic evidence suggest the genes responsible for underlying light sensitive pigment that facilitates essentially all vision and light sensitivity in animals - rhodopsin - is 2 billion years old.
Any questions?
As it happens, not only do we see both camera eye like ours, and compound eye similar to insect and crab’s having each evolved at least once, there happen to be an entirely new lineage of eye, seemly entirely separate from the compound and the camera eye, that is being evolved as we speak. This is the external shell eye of the rimicaris exoculata shrimp. This shrimp has the genes for the normal compound eye found in typical shrimps. In juvenile stage the compound eye is there. In adulthood, the compound eye is reabsorbed. But a truly remarkable adaptation occurs. An entirely unique sheet of light sensitive cells grows over the shell on the shrmp’s back. In effect the shrimp transforms its back into the retina of a new inside out eye.
