A complex adaptation like the human eye exists in its present form because:
a. many organisms have eyes.
b. it was created by a chance mutation.
c. past organisms evolved and utilized transitional forms of the eye
d. extreme forms of variation allowed it to evolve in a single jump.

The human eye is a complex adaptation, which has evolved over many millions of years, and similarly to other composite adaptations, it still exhibits the signs of the evolutionary history. The complex adaptation of the human eye is the outcome of the evolution of the past organisms, which have utilized transitional forms of the eye. The evolution of the eye is a cumulative procedure. The evolution of the eye did not take place by random chance, however, it occurs due to billions of years of natural selection.

A complex adaptation like the human eye exists in its present form because: a. many organisms have eyes. b. it was created by a chance mutation. c. past organisms evolved and utilized transitional forms of the eye d. extreme forms of variation allowed it to evolve in a single jump.

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A complex adaptation like the human eye exists in its present form because:
a. many organisms have eyes.
b. it was created by a chance mutation.
c. past organisms evolved and utilized transitional forms of the eye
d. extreme forms of variation allowed it to evolve in a single jump.