[See original article (linked below) for the citations of quotes from Jesus on Adam & Eve, and how they may be understood.]
….The question of Adam and Eve is a theological question and a hermeneutical question. It isn’t really a scientific question. Nor can it be decided by submission to the allusions of Jesus recorded in the gospels. The most significant theological questions are raised by Romans 5 and 1 Cor. 15.
There are ways to reconcile a literal Adam and Eve with the scientific data. I have posted on the question of Adam many times. See for example the last part of Evolution, Entropy, and Human Beings 2 or other posts on the question of Adam listed about 3/4 of the way down the Science and Faith index. Reconciling a literal Adam and Eve with the scientific data requires something of a stretch, but is not impossible if one feels that the theological teaching of the sweep of scripture requires Adam, Eve, and the Fall.
There are also ways to understand the sweep of scripture and the fallen nature of mankind without reference to a historical Adam and Eve. These do not necessarily diminish the inspiration and authority of scripture as witness to the work of God in the world.