Chromosomal crossover occurs during meiosis when homologous chromosomes swap genetic material, resulting in the production of new combinations of genetic traits. There are several other terms that are often used synonymously with chromosomal crossover: genetic recombination, meiotic recombination, and crossing-over are a few examples. Genetic recombination is a very broad term that also includes other types of genetic exchange, such as non-crossover gene conversion. Meiotic recombination is a term used to describe the specific type of genetic recombination that happens during meiosis, which is the process by which sex cells are formed. Crossing-over is a more general term used to describe the physical exchange of genetic material between homologous chromosomes during meiosis.