Question

structure like eye evolved due to single change in DNA ". justify the statement…

Answer 1

Eyes in anthropoids or in case of insects have compound eyes which are made up of thousand of optical surfaces and eyes of other animals are composed of single lens but in comparison human eyes are the most advanced because they are capable of recognizing colors and have a very good depth perception and the evolution of eyes began with the formation of eye spots and was developed gradually in a more complexed organ.

Answer 2

First animal of planaria it show eye like structure.the eyes of planaria are just eye spots to detect light. eye of higher animal are simple eyes which composed of a single lens