The closer together different genetic sequences are in the same chromosome the smaller is the chance of crossing-over/recombination among them
Explanation:
Genetic linkage refers to genetic sequences which are located on the same chromosome, and thereby they are usually inherited together during meiosis. On the other hand, crossing over (also known as recombination) refers to the exchange of chromosome fragments between non-sister chromatids during meiosis. In consequence, the closer together two genetic sequences are on the same chromosome, the lesser will be the chance they will be separated by crossing-over.
