What is an example of linkage (organism, chromosome number, genes)?

An example of linkage is the inheritance pattern observed in fruit flies (Drosophila melanogaster). In fruit flies, the genes for eye color and wing shape are located on the same chromosome (chromosome number 2). The gene for red eye color (wild type) and the gene for normal wing shape (wild type) are located close together on this chromosome. As a result, they tend to be inherited together more frequently than would be expected by chance, demonstrating genetic linkage.

An example of linkage is observed in fruit flies (Drosophila melanogaster). In fruit flies, the chromosome number is 8. One classic example of genetic linkage in fruit flies involves the genes for eye color and wing shape, which are located on the same chromosome. The gene for red eye color (r) and the gene for vestigial wings (vg) are known to be closely linked on chromosome 2 of the fruit fly. Due to their close proximity on the chromosome, these genes tend to be inherited together more frequently than would be expected by chance if they were assorting independently. This phenomenon of genetic linkage can be observed through deviations from expected Mendelian ratios in offspring, as certain combinations of traits are inherited together more often than others.