Linkage is the phenomenon of physical association of genes on a chromosome and  recombination is the generation of non-parental gene combinations. Strength of the linkage between two genes is inversely proportional to the, distance between the two, i.e., two linked genes show higher frequency of crossing over (recombination) if the distance between them is higher and lower frequency if the distance is small. But distance between gene has a direct relationship with percentage of recombination  because with increase in distance between genes percentage of recombination  increases

Explanation:
In genetics, recombination refers to the process by which genetic material is exchanged between two chromosomes during meiosis. This process leads to the creation of new combinations of alleles and is an important factor in genetic diversity.

The distance between genes on a chromosome and the percentage of recombination between them are related. The percentage of recombination represents the frequency at which genetic material is exchanged between two genes during meiosis. It is a measure of the distance between the genes on the chromosome.

Inverse Relationship:
The distance between genes on a chromosome and the percentage of recombination between them show an inverse relationship. This means that as the distance between genes increases, the percentage of recombination between them decreases, and vice versa.

When two genes are located close to each other on a chromosome, they are more likely to be inherited together and show lower recombination frequency. This is because the physical proximity of the genes reduces the chances of genetic material being exchanged between them during meiosis.

On the other hand, when two genes are located far apart on a chromosome, they are more likely to undergo recombination and show a higher percentage of recombination. This is because there is a greater chance for genetic material to be exchanged between the genes during meiosis.

Example:
For example, let's consider two genes A and B on a chromosome. If the distance between A and B is very small, let's say 1 centimorgan (cM), the percentage of recombination between them might be around 1%. However, if the distance between A and B is larger, let's say 10 cM, the percentage of recombination between them might be around 10%.

This inverse relationship between the distance between genes and the percentage of recombination is used to create genetic maps, which provide a relative order and distance of genes on a chromosome.

Conclusion:
In conclusion, the distance between genes on a chromosome and the percentage of recombination between them show an inverse relationship. This relationship is based on the fact that the physical distance between genes affects the likelihood of genetic material being exchanged between them during meiosis.