What is a GA? The basic techniques of the GAs are designed to simulate processes in natural systems necessary for evolution, specially those follow the principles first laid down by Charles Darwin of "survival of the fittest." Since in nature,competition among individuals for scanty resources results in the fittest individuals dominating over the weaker ones.What is a GA? ❑ The basic techniques of the GAs are designed to simulate processes in natural systems necessary for evolution, specially those follow the principles first laid down by Charles Darwin of "survival of the fittest.". ❑ Since in nature, competition among individuals for scanty resources results in the fittest individuals dominating over the weaker ones