Final answer:
To map the relative position of genes on a chromosome, DNA sequence data is used. Cytogenetic mapping, radiation hybrid mapping, and sequence mapping are three primary methods used, with sequence mapping providing the most detailed physical map.
Step-by-step explanation:
The kinds of data that could be used to map the relative position of three genes on a chromosome are DNA sequence data. While other options like gene expression levels, protein structure, and cellular location provide valuable information about gene function and regulation, DNA sequence data directly informs us about the position of genes on a chromosome.
In the context of creating maps to evaluate genomes, there are three primary methods: cytogenetic mapping, which involves analyzing stained sections of chromosomes under a microscope to find the approximate distance between genetic markers; radiation hybrid mapping, which breaks DNA using radiation and creates maps that aren't influenced by recombination frequency; and sequence mapping, which employs DNA sequencing technology to create precise physical maps of the genome.
These methods help scientists understand the arrangement of genes, with sequence mapping providing the most detailed information about the physical location of genes.