IGNOU LSE 7 2018 - Explain industrial melanism and genetic repatterning during isolation

Question

Explain industrial melanism and genetic repatterning during isolation with examples.

23 Jan 2018

Answer :

Word Count : 316

From the outset multiple causes have been suggested for changes in melanic gene frequency in the peppered moth Biston betularia and other industrial melanic moths. These have included higher intrinsic fitness of melanic forms and selective predation for camouflage. The possible existence and origin of heterozygote advantage has been debated. From the 1950s, as a result of experimental evidence, selective predation became the favoured explanation and

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