Industrial Melanism in British Peppered Moths Has a Singular and Recent Mutational Origin
2011; American Association for the Advancement of Science; Volume: 332; Issue: 6032 Linguagem: Inglês
10.1126/science.1203043
ISSN1095-9203
AutoresArjèn E. van’t Hof, Nicola Edmonds, Martina Dalíková, František Marec, Ilik J. Saccheri,
Tópico(s)Insect and Pesticide Research
ResumoThe rapid spread of a novel black form (known as carbonaria) of the peppered moth Biston betularia in 19th-century Britain is a textbook example of how an altered environment may produce morphological adaptation through genetic change. However, the underlying genetic basis of the difference between the wild-type (light-colored) and carbonaria forms has remained unknown. We have genetically mapped the carbonaria morph to a 200-kilobase region orthologous to a segment of silkworm chromosome 17 and show that there is only one core sequence variant associated with the carbonaria morph, carrying a signature of recent strong selection. The carbonaria region coincides with major wing-patterning loci in other lepidopteran systems, suggesting the existence of basal color-patterning regulators in this region.
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