Regarding the eye:
A) Even if we accept the notion of gradual evolution.... is each gradual stage not the product of i) a change in DNA code , to ii) gather a different arrangement of amino acids, to iii) form a new variation of protein, to iv) form a new cell, to v) form a new type of tissue, to vi) form a new, improved, 2016 model organ . No matter how slight the improvement is, is that not an astounding chain of events? Even the most miniscule, subtle improvement would require a huge degree of organization. And all this has to happen millions and millions of times, in a limited amount of time.
Enter: the
Hox genes.
They control whole body sections, which can cut out a few of your i)'s and shorten the chain into something less astounding to your point, granted it just shifts the astound to something else.
That links was great, you should check it out.
This link isn't as awesome, but it better relates from Hox genes in general, to more about how they can be involved regarding the eye.
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