In genetic algorithm, there are different steps. One of those steps is selection of chromosomes for reproduction (Evolution). In this step there are different methods are used for selection of chromosomes, one of them is "roll-it selection ". What are the other methods ?
There are several selection methods. Just to mention a few:
Fitness proportionate selection (a.k.a. roulette wheel selection)
In the paper "Selection Methods for Genetic Algorithms", by Khalid Jebari, a comparison study between several selection methods is described. See also the paper "A comparative analysis of selection schemes used in genetic algorithms" by David E. Goldberg and Kalyanmoy Deb.