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INDUSTRIAL MELANISM AND ITS PLACE IN NATURE
THE ATTRIBUTES OF BLACK COLOURATION
EXAMPLES OF MELANISM AND ITS FUNCTIONS
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alleles Amathes glareosa aposematic appears background behaviour bidentata bimacula birds Biston betularia black eggars black form bred Britain broods Cadbury Caithness callunae carbonaria cent centres Chapter Cleora Clerck cline Cockayne cognataria colony colouration common controlled crypsis cryptic advantage cryptic species dark forms edda England example experiments feeding females forewings frequency of f gene gene-complex genetic gulls hatching heather heterozygote Hillswick hindwings homozygote Hufn incomplete dominance individuals industrial areas Industrial Melanism insect insularia Kettlewell large numbers larvae Lasiocampa quercus Lepidoptera lichened light localities males medionigra melanic f melanic forms melanic polymorphisms morphs moths mutant nigra Non-industrial melanic northern observed occur olivacea pattern phenotype Phigalia pilosaria Plate pollution polymorphism population predation pupae quercus ssp rare recaptured recently Recessive Melanism recorded released repandata rest sample Schiff Scotland selective Sheppard Shetland similar southern specimens Steeple Barton Table Tingwall trees trunks Tutt typica Unst wild wings yellow Yorkshire