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Abstract.Drosophila ananassae is known to produce numerous alpha-amylase variants. We have cloned seven different Amy genes in an African strain homozygous for the AMY1,2,3,4 electrophoretic pattern. These genes are organized as two main clusters: the first one contains three intronless copies on the 2L chromosome arm, two of which are tandemly arranged. The other cluster, on the 3L arm, contains...
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