9. Linkage of Dt with loci in chromosome 9. Data published in 1938 suggested that Dt was linked with C. To test this indication the following data were obtained:
|Genes||Linkage Phase||XY||Xy||xY||xy||Total||% Recomb.|
|Dt Ws||C S||1663||525||690||119||2996||41|
|Dt Wx||C B||682||65||472||677||2206||40.9|
|Dt Sh||C S||679||100||156||138||1073||27|
These data definitely prove that Dt is in chromosome 9 and further indicate that Dt should lie close to yg2. Tests with yg2 have been handicapped by the fact that all available yg2 stocks are homozygous for recessive c and it has been necessary to extract a yg2 C stock.