Final answer:
The question seems to pertain to a study of linkage disequilibrium on human chromosome 22, but without specific information about 'Dawson's study', a general description of linkage disequilibrium, linkage mapping, and their roles in genetics is provided.
Step-by-step explanation:
The question is referring to the concept of linkage disequilibrium and its study on human chromosome 22. However, the name 'Dawson' doesn't specifically match with a known study on this topic, and without further context, it's hard to pinpoint the exact study being referred to.
When constructing a linkage map, such as the one for the Human X Chromosome, geneticists measure the frequency of recombination events between various genetic markers during meiosis. These maps help researchers understand the spatial arrangement of genes on chromosomes and can aid in pinpointing the location of genes related to genetic disorders.