Question

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

Answer 1

Eye is a very important and complex organ it cannot be formed by a single DNA change . First of all the rudimentary eyes of planaria and after that more and more complex eyes were produced in different organisms

Answer 2

Evolution of eye

Explanation:

The eye is a vital and very complex organ. It is not possible to form the eye from a single DNA change. The evolution of eye takes place in stages and it is a very complicated process. Studies suggest that evolution of eyes in Planarians takes place in stages depending upon the environmental conditions and adaptation. Planaria has the ability to detect light due to the presence of eye spots. These eye spot are photoreceptors that are sensitive to light. Planaria will not be able to survive under dry condition, as the light will dry their skin. So, they move away from the light source and protect their skin from drying.