Background Information

A common analogy is that a gene map is the ''road map of life.'' Road maps are a depiction of long segments of concrete known as roads and locations on the roads that represent cities. While the units of measure for a road map are often in miles or kilometers, different units of measurement are used for gene maps based on the type of map that is presented. Two types of gene maps commonly used in genetics are genetic maps (or linkage maps) and physical maps. Both maps depict the linear order of genes located on a chromosome. The concepts of gene mapping presented are located in most college genetics text books.[1]

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