Vertebrate Any of a subphylum (Vertebrata) of chordates possessing a spinal column that includes the mammals, birds, reptiles, amphibians, and fishes. By permission. From Merriam-Webster's Collegiate(R) Dictionary at

proceeds stepwise. The vertebrate eye did not appear suddenly in all its present perfection. Its formation requires the appropriate integration of many genetic units, and thus the eye could not have resulted from random processes alone. The

Un unborn or unhatched vertebrate especially after attaining the basic structural plan of its kind; specifically : a developing human from usually three months after conception to birth. Related Topics: Genetics

for the formation of the vertebrate eye could have never been produced by a random process like mutation. Not even if we allow for the three billion years plus during which life has existed on earth. The complicated anatomy of the eye like the