Left limit of break 1 from polytene analysis (FBrf0005979) Right limit of break 1 from polytene analysis (citation unavailable) Limits of break 2 from polytene analysis (FBrf0005979)
Identity of Df(1)f257-6 with the Bridges fB deficiency claimed in Bridges and Brehme (1942), but this does not seem well established. Bridges's case was the first recorded deficiency; in 1925, it was claimed to be lost. Df(1)f257-6 obtained by Demerec from Pasadena in 1933 as a fB deficiency.
Deletes the first repeat of the 16A region.
Left limit of break 1 from polytene analysis (FBrf0005979) Right limit of break 1 from polytene analysis (citation unavailable) Limits of break 2 from polytene analysis (FBrf0005979)