Question? If God could create a man (Adam)..........fully developed with all the characteristics of a male human being that exists today as having gone through all the stages of human development in order to compare to present Adam as a full grown person.......why could this same God not not create "anything" other than a man with the characteristics of having natural development? In other words......either God has this capacity in being the Omnipotent, Ominscient, Omnipresent creator of the Universe and everthing in it and did create as described in the inspired book of Genesis, or you refuse to accept God as the omnipotent, omniscient, omnipresent Creator.....and place limits upon God as determined by the reasoning of man.
Its not difficult, you either accept God as the inspired source of the Word of God or you don't.........and attempt to rationalize the creation model described in Genesis (a literal 7 day event) as an allegory.......when the text is not stated to be symbolic in the least when read in context. Man attempts to make God fit man's ideology in attempting to mold theorethical science and scripture together by declaring everything that does not equal man's ideology with that which is stated in the Word of God....as allegorical, symblic, etc.,
God's ways and methods are way past the ability of any man to comprehend fully. The only will of God we understand is that which He has choosen to reveal to mankind. I prefer to take God at His word.....and accept that God has the ability to do as He wishes.......to determine the beginning from the ending, even before the worlds were created. (Isa. 55:8-9, Job 36:26, Deut. 29:29, Job 5:9, Job 11:7)