1) Which approach from the following approaches "a" and "b" is used while performing crossover?
a) By selecting any 2 parents randomly from selected population, crossing them, forming just TWO offsprings, adding them in population and throwing out just TWO least fit individuals.
Thus, here, the new generation will have just 2 new individuals? Rest all individuals will be old?
b) By selecting parents and forming offsprings equal to population size and replacing the entire old population with new one.
Thus, here , in new generation, all individuals will be the new offsprings that were generated by previous population?
2) Also, where will the crossover probability come into picture here?