Expression of a set of head-specific genes during Drosophila development
Abstract
The expression of 20 cloned DNA sequences, selected on the basis of the prevalence of their transcripts in Drosophila adult head, was examined during Drosophila development. The amount of polyadenylated RNA complementary to these clones was measured in the cytoplasm of 0- to 20-hr embryos and on the polysomes of third instar larvae and 5- to 7-hr pupae. Four patterns of developmental expression were observed among the 20 clones, including 6 clones whose transcripts are prevalent only on polysomes of the adult head. Multiple genes closely clustered within the DNA of individual clones were shown to be expressed coordinately during development in some cases and differentially in others. © 1982.
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