Though I spent about 10 years in the JW community, I was raised a Jew and went to Hebrew school for 10 years. I hate to burst your bubble, but the idea of narrative of the of Adam and Eve offering up something scientific is, well, not very sound.
Adam and Eve are likely mythological, though the idea of Eve coming from Adam's "rib" or tzela is actually far more complex in the Torah than what you mapped out.
The stories in the Torah are meant to teach the Jews how to apply the Torah into their daily lives. In a nutshell, how we have the Torah today was designed to equip the Jews to return to the Promised Land after the Exile from Babylon. It was composed by the sages among the Levitical priesthood in Babylon who remained there and eventually set up a school (and later composed the Babylonian Talmud a generation or two later).
The idea of tzela does not begin with Adam's rib but at Genesis 1:27, when God creates man in God's "image."
That word there is b'tzelem, a form of the exact same Hebrew word. It refers to the type of image a king might make of himself on a coin that he imprints of himself on his own currency.
This would imply that Eve was not fashioned out of Adam's "rib" or side as an afterthought, so to speak, but was created at the same time as Adam (even though there are variations to the creation narrative offered for teaching purposes in the Torah). Eve or Woman is in the "image" of Man and vice versa--they are two halves of one another, according to the Law of Moses.
This is what the Law is teaching.
It is much more difficult to see this when you do not read or speak Hebrew on a normal basis.
As for that particular Hebrew word, it is of course the pinnacle of the basis for the world "image" and "idol" and "idolatry"--a far more central theme being played upon in Torah than merely a rib. You are just scratching at a foreshadowing at the beginning of the Torah.
The Hebrew creation accounts were not exclusive to the Jews. They were drawn from the rich culture of the Middle East (mythology, folklore, legends) and interwoven into the theology that you find in the Torah. None of it, however, is meant to teach history or touch upon modern science.