In 1 Corinthians 15: 42-44 you find the solution to “the little problem” you address:
42 It is the same way with the resurrection of the dead. Our earthly bodies are planted in the ground when we die, but they will be raised to live forever. 43 Our bodies are buried in brokenness, but they will be raised in glory. They are buried in weakness, but they will be raised in strength. 44 They are buried as natural human bodies, but they will be raised as spiritual bodies. For just as there are natural bodies, there are also spiritual bodies.
You have to keep in mind that God assumes a body in and through Jesus Christ, in order we can become deified also in our body. And this is the reason why we are in the image of God, because we share a body like the body of Jesus Christ. Our true common ancestor is Jesus Christ, not genetically but theologically.
Adam (in the sense of the first sinner) is our common ancestor, not genetically but according to the lineage of sin: We all are “bound over to disobedience”, the state the first sin produced (the so called “state of original sin”) and, paradoxically, thanks God’s mercy (Romans 11:32)!