Larval age and the pattern of DNA synthesis in polytene chromosomes.
D000818:Animals; D001345:Autoradiography; D002874:Chromosome Mapping; D002875:Chromosomes / Q000378:metabolism*; D004247:DNA / Q000096:biosynthesis*; D004330:Drosophila; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
D014316:Tritium; D004247:DNA; D013936:Thymidine