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A gene map is the descriptive representation of the structure of a single gene.
Each gene has one and only one beginning point, called the start codon.
I do not know when the first map was made, but the first globe was made by one of Marco Polos freinds
A gene map is a chromosomal map, which shows the location of genes. Based on inherited genes, a linkage can be used to create a gene map.
it was made to help people