Whatever did it, was in a rush. Humans are the only creatures on the face of earth, as far as I know, that have more than 2000 genetic deficiencies. it's not a perfect job. while sharks for example, have been around for about 180 million years (I think that's the number) and can't get cold or cancer.
Read Genesis 1:1. I tried to type some of it but it's too long! Lol I didn't think it was THAT long...But anyways, I guess to put it in few words is: We were created by God with dust. God said man would be lonely so he created woman to be a helper of the Lord and a likeness of Adam. Eve was created when God took Adam's rib while Adam was sleeping and breathed the breathe of life into her. At least that's my prospective of it. :)