When we look at the Woman (Eve), we find that God took the rib/side (Hebrew: tsela), but built a new person—with new DNA and all. I can say with confidence that we know that Eve wasn’t a clone because she was female. She had different sex chromosomes (XX) as opposed to Adam’s XY.
If she had the same DNA, they would have both been males. So, God stepped in and specially created Eve—as well as her DNA—to be just as unique as Adam’s. This means they were both special creations and both made in the image of God, since Eve came from Adam. Thus, God ingrained the vast majority of information that appears in various people groups today—right from the start.