Venema says there is no way we can be traced back to a single couple. He says with the mapping of the human genome, it's clear that modern humans emerged from other primates as a large population — long before the Genesis time frame of a few thousand years ago. And given the genetic variation of people today, he says scientists can't get that population size below 10,000 people at any time in our evolutionary history.To get down to just two ancestors, Venema says, "You would have to postulate that there's been this absolutely astronomical mutation rate that has produced all these new variants in an incredibly short period of time. Those types of mutation rates are just not possible. It would mutate us out of existence."
"When Adam sinned, he sinned for us," Mohler says. "And it's that very sinfulness that sets up our understanding of our need for a savior. Mohler says the Adam and Eve story is not just about a fall from paradise: It goes to the heart of Christianity. He notes that the Apostle Paul (in Romans 5 and 1 Corinthians 15) argued that the whole point of Jesus' crucifixion and resurrection was to undo Adam's original sin. "Without Adam, the work of Christ makes no sense whatsoever in Paul's description of the Gospel, which is the classic description of the Gospel we have in the New Testament," Mohler says.
But others say Christians can no longer afford to ignore the evidence from the human genome and fossils just to maintain a literal view of Genesis.
"This stuff is unavoidable," says Dan Harlow at Calvin College. "Evangelicals have to either face up to it or they have to stick their head in the sand. And if they do that, they will lose whatever intellectual currency or respectability they have."