Until the development of the Darwinian evolution, most people believed that humans evolved from Adam and Eve. This has been challenged by science on two fronts. They are many have debated theories, but here are the main reasoning discussed in detail below.
Instant Appearance Of Humans
The Christian belief that man suddenly appeared has been explained in the theory of evolution from primates to modern man. Through palaeontology, there has been a discovery of improvement of tools made by early humans. The tools suggest progress from primitive to intellectual form. There is no sudden appearance of an intelligent human.
Modern Day Genetics
The idea of the entire human species arising from one pair of parents has been replaced in that evolution has taken place in very large populations whose number cannot stem from just two individuals. There have been several mutations that have resulted in a variety of human genes. This is visible in the various races. This suggests that humans could not have possibly evolved from two sets of genes.
There is scientific proof that Adam and Eve truly existed. However, science shows that their presence is not scientifically impossible. A speculative treatment of the literal existence of Adam and Eve requires and integration of three perspectives, theological, natural sciences, and philosophy.