What is it called when the further apart two genes are, the more likely recombination will occur?

The phenomenon where genes that are located further apart on a chromosome are more likely to undergo recombination is referred to as crossing over. This process occurs during meiosis, specifically in prophase I, when homologous chromosomes exchange segments of genetic material, resulting in new combinations of alleles.

As two genes become physically more distant from each other on a chromosome, the likelihood of a crossover event occurring between them increases. This is due to the fact that there is more physical space in which chromosomal segments can interact, leading to a higher probability of recombination.

Chiasma, on the other hand, is the point where two homologous chromosomes exchange genetic material. While it is relevant to the process of crossing over, it does not describe the relationship between the distance of genes and the likelihood of recombination.

Gene linkage refers to the tendency of genes that are located close together on the same chromosome to be inherited together, while genetic mapping is a method used to determine the relative positions of genes on a chromosome based on recombination frequency. Therefore, crossing over is the term that accurately describes the relationship between gene distance and recombination likelihood.