C
c659smith
Guest
Humans are also the only primates for whom the outline of the eye and the position of the iris are clearly visible. In addition, our eyes are more horizontally elongated and disproportionately large for our body size compared to most apes. Gorillas, for example, have massive bodies but relatively small eyes.Find a picture of a chimpanzee. Observe its eyes. The eyes of a chimpanzee are extremely similar to human eyes, the major difference being that chimpanzee eyes are almost always brown, while human eyes are mostly brown but can be other colours.
The human eye and the chimpanzee eye both evolved from our common ancestor with the chimpanzees - an extinct African ape from about five million years ago. That would also have had similar eyes, very probably brown.
The colour differences in human eyes are probably associated with some humans evolving lighter colouration (fair skin for instance) to help with vitamin D production in higher latitudes.
rossum
we also communicate with our eyes and apes do not.
Come on now where is this evolutionary process there must be some link – this did not occurr over night.