Here's why:
* Recombination (Crossing Over): During meiosis, homologous chromosomes exchange genetic material. This exchange, called crossing over, happens at points called chiasmata.
* Distance and Probability: The farther apart two genes are, the more likely it is that a chiasma will form between them. This means there's a greater chance that the genes will be separated and end up on different chromosomes.
* Linkage: Genes located close together are said to be "linked" because they tend to be inherited together. The closer they are, the more tightly linked they are.
* Mapping: Scientists use the frequency of recombination to map the relative positions of genes on chromosomes. The higher the recombination frequency, the farther apart the genes are.
In summary, the distance between genes influences the probability of recombination, with greater distance leading to a higher chance of crossing over and separation.
