Investigating the Role of Fruitless in Behavioural Isolation Between Drosophila melanogaster and Drosophila simulans
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Isolation
Melanogaster
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Genetic divergence
Divergence (linguistics)
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47 Linltage data 48 Detection of linkage in Group V 48 Branched and fused 48 Branched and approximated 48 Fused and interrupted 48 Interrupted and approximated 48 Branched and ruffled 48 Cross-over values 48 Fused and interrupted 48 Fused and branched 49 Fused and approximated ... 49 Interrupted and branched .49 Interrupted and approximated 49 Branched and ruffled 50 Discussion 50 VII.Linkage Grodp VI 51 Bent 51 Linkage tests with bent 52 Net S2 VIII.Additional Characters 54 Extra 54 Spine 54 Capsule 54 Minus 55 IX.Comparison of mutant characters in D. virilis with those in other species of Drosophila 56 Page IX.Comparison of mutant characters -Continued.Comparison of se.\-linked characters Forked and singed series v^-In D. melanogaster In D, virilis In D. willistoni In D. obscura In D. simulans In D. funebris Relationships Comparison mth sex-linked characters in D. melanogaster Comparison with sex-linked characters in D. simulans ... 64 Comparison with sex-hnked characters in D. willistoni . .64 Comparison with sex-linked characters in Z>. obscura... ■ 65 Comparison with sex-linked characters in D. funebris .... 66 Comparison of autosomal characters ■ 66 X.N^he case of vermilion, and the possibihty of a rearrangement of genes 69 XI.Comparison of X-chromosome maps J_\ XII.Coincidence '>^ XIII.Chromosomes and linkage groups compared 77 XIV.Tabulation of Unkage experiments 79 Group I "9 Group II 90 Group III Group IV Group V XV.Literature cited ' Exclusive of two or three species which have only been studied slightly.' For a diacussion of this feature see Metz, 1916a.PLATE 1 3S3!M>, '
Drosophila virilis
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Isolation
Reproductive isolation
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Isolation
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Abstract How reproductive isolation is established between populations is a fundamental question in the study of speciation. To answer this question, mechanisms of prezygotic and postzygotic isolation have been analyzed in many species pairs from diverse taxa. Because of its genetic manipulability, the genus Drosophila is suitable for such analyses. Since hybrid inviability and sterility was noticed in crosses between Drosophila melanogaster and Drosophila simulans 90 years ago, this species pair has contributed much to our knowledge of genetic mechanisms of reproductive isolation. The history of genetic analyses of postzygotic isolation in this species pair is reviewed here.
Reproductive isolation
Melanogaster
Genetic algorithm
Isolation
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