The strength of the linkage is determined by the distance between the two genes. greater the distance lower will be the linkage strength. the linkage is broken down due to the phenomenon of crossing over which occurs during meiosis. crossing over will be relatively more frequent if the distance between the two genes is more than in a case where the distance between the two genes is lesser. depending on the distance between any two genes which is inversely proportional to the strength of linkage non crossovers will vary from 50% to100% (100% non crossovers is a stage where no crossing over takes place). the crossovers will similarly vary from 0 - 50% and will never exceed 50%.

Distance between Genes and Strength of Linkage:
The distance between two genes on a chromosome plays a crucial role in determining the strength of linkage between them. Linkage refers to the tendency of genes located close together on the same chromosome to be inherited together. The strength of linkage is inversely proportional to the distance between the genes.

Explanation:
When genes are located close together on a chromosome, they are more likely to be inherited together and exhibit a lower frequency of recombination events. Recombination, or genetic crossover, is the exchange of genetic material between homologous chromosomes during meiosis. It plays a crucial role in generating genetic diversity by shuffling alleles between chromosomes.

Inversely Proportional Relationship:
The strength of linkage is inversely proportional to the distance between genes. This means that as the distance between genes increases, the likelihood of recombination events between them also increases. Recombination occurs at specific sites along the chromosome known as crossover points.

Effect on Crossover Frequency:
The frequency of crossover events between two genes depends on their distance apart. When genes are located very close together, the chance of a crossover occurring between them is minimal. This results in a higher frequency of non-recombinant offspring, where the genes are inherited together.

As the distance between genes increases, the probability of a crossover event occurring between them also increases. This leads to a higher frequency of recombinant offspring, where the genes are shuffled and inherited separately. Therefore, the frequency of crossover events is directly related to the distance between genes.

Measuring Linkage:
The strength of linkage between two genes can be quantified by determining the frequency of recombinant offspring in a population. This allows researchers to construct genetic maps, which show the relative positions of genes on a chromosome based on their recombination frequencies.

Conclusion:
In summary, the distance between two genes on a chromosome determines the strength of linkage between them. The closer the genes are, the less likely they are to undergo recombination, resulting in a higher frequency of non-recombinant offspring. However, as the distance between genes increases, the likelihood of recombination events also increases, leading to a higher frequency of recombinant offspring. Understanding the relationship between gene distance and linkage strength is essential for studying inheritance patterns and constructing genetic maps.