A.H. Sturtevant and linkage mapping Sturtevant: strength of linkage is relative to physical distance (1)Recombination is randomly distributed in the chromosome. (2) Each gene has a unique location (locus)on the chromosome (3) The frequency of recombination is proportional to the distance between two loci on the chromosome ie, a-B is smaller than b-c A BA.H. Sturtevant and linkage mapping • Sturtevant: strength of linkage is relative to physical distance. • (1) Recombination is randomly distributed in the chromosome. • (2) Each gene has a unique location (locus) on the chromosome. • (3) The frequency of recombination is proportional to the distance between two loci on the chromosome. ie. A - B is smaller than B - C A B C