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Abstract
An experiment was performed on five inbred strains of Drosophila melanogaster to find out the kind of developmental variations that occur from changes in environmental temperature. Dimensional traits representative of three units (compartments) of development from the same imaginal wing disc (mesonotum, anterior and posterior wing regions) have been considered.
Analysis of the results shows that the five strains respond to temperature (25 and 28 °C) in the same way. The three compartments on the contrary show different responses suggesting that a unit of development may be considered as a unit of response to environment. The results are discussed in terms of developmental and quantitative genetics.