what are ways that genetic variability can occur in sexually reproductive organisms
Sexual reproduction is able to generate genetic variation in offspring because the process of meiosis randomly shuffles genes across chromosomes and then randomly separates half of those chromosomes into each gamete. The two gametes then randomly fuse to form a new organism.Genetic variation is one of the keys to evolutionary fitness. This is made possible because reproductive cells undergo meiosis, which is the process in which one cell divides twice to produce four sperm or four eggs.he two gametes then randomly fuse to form a new organism. Genetic variation is one of the keys to evolutionary fitness. This is made possible because reproductive cells undergo meiosis, which is the process in which one cell divides twice to produce four sperm or four eggs.