Cytological location and further characterization of the Third chromosome resistance gene in Drosophila melanogaster.

Abstract excerpt

Mutations in the Third chromosome resistance (Tcr; 3-39.6) gene confer dominant resistance to alpha-methyl dopa and suggest the gene is involved in catecholamine metabolism. Evidence for involvement in catecholamine metabolism comes from the three phenotypes associated with the mutant Tcr chromosomes--dominant resistance, dominant rescue of partially complementing l(2)amd alleles, and recessive lethal phenotypes....

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