select.js

this.selection = function() {
    var newSticks = [];
    for (var i = 0; i < this.sticks.length; i++) {

      var parentA = random(this.pool).dna;
      var parentB = random(this.pool).dna;

      var child = parentA.crossover(parentB);
      //child.mutation();

      newSticks[i] = new Stick(child);
    }

    this.sticks = newSticks;
}

var mid = floor(random(this.genes.length));
    for (var i = 0; i < this.genes.length; i++) {

        if (i > mid) {
        newgenes[i] = this.genes[i];
        }

        else {
        newgenes[i] = partner.genes[i];
        }
    }

    return new dna(newgenes);
}