Now consider how far this meaning conforms to the reality. For the spirit and the soul of Adam, when they were attached to the human world, passed from the world of freedom into the world of bondage, and His descendants continued in bondage. This attachment of the soul and spirit to the human world, which is sin, was inherited by the descendants of Adam, and is the serpent which is always in the midst of, and at enmity with, the spirits and the descendants of Adam. That enmity continues and endures. For attachment to the world has become the cause of the bondage of spirits, and this bondage is identical with sin, which has been transmitted from Adam to His posterity. It is because of this attachment that men have been deprived of essential spirituality and exalted position. http://reference.bahai.org/en/t/ab/S...=highlight#gr8Know that there are two natures in man: the physical nature and the spiritual nature. The physical nature is inherited from Adam, and the spiritual nature is inherited from the Reality of the Word of God, which is the spirituality of Christ. The physical nature is born of Adam, but the spiritual nature is born from the bounty of the Holy Spirit. The first is the source of all imperfection; the second is the source of all perfection. http://reference.bahai.org/en/t/ab/S...=highlight#gr2A great man is a great man, whether born of a human father or not. If being without a father is a virtue, Adam is greater and more excellent than all the Prophets and Messengers, for He had neither father nor mother. That which causes honor and greatness is the splendor and bounty of the divine perfections. The sun is born from substance and form, which can be compared to father and mother, and it is absolute perfection; but the darkness has neither substance nor form, neither father nor mother, and it is absolute imperfection. The substance of Adam’s physical life was earth, but the substance of Abraham was pure sperm; it is certain that the pure and chaste sperm is superior to earth. http://reference.bahai.org/en/t/ab/S...=highlight#gr1
So we inherent our "imperfections" from Adam, and Adam was created without father or mother.