Final answer:
Genes that are located close together on the same chromosome are unlikely to be separated due to crossing-over.
Step-by-step explanation:
When two genes are located in close proximity on the same chromosome, their alleles tend to be transmitted through meiosis together.
If two genes are very close together on the same chromosome, there is a slim chance of a crossover event happening between them.
As the distance between two genes increases, the probability of crossovers between them increases, and the genes behave more as if they are on separate chromosomes.
Therefore, genes that are located far apart on a chromosome are unlikely to be separated due to crossing-over.