title: Replication patterns in polytene chromosomes of Drosophila hydei, Drosophila neohydei and their hybrids.
mesh_terms: D000818:Animals; D001483:Base Sequence; D002875:Chromosomes / Q000378:metabolism*; D004261:DNA Replication; D004330:Drosophila; D006570:Heterochromatin / Q000378:metabolism; D006824:Hybridization, Genetic; D012469:Salivary Glands
chemical_list: D006570:Heterochromatin