BIOL 2P05 Lecture Notes - Lecture 4: Blue Moon, Epistasis, Wolbachia
6 Feb 2018
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Document Summary
Selection favours parents who produce offspring of the underrepresented sex. 1920s - entomologists in fiji had started to notice that the blue moon butterfly populations were mostly females. Blue moon butterflies were 99% female due to a bacterial strain (wolbachia) selectively killing males. Discovered a suppressor gene that was introduced, which made males resistant to the bacteria strain. Resistant males spread, and were able to reproduce. *if these conditions exist, the proportion of the trait (ex. Shell colour) in the population, will change over time. Mutation is one of the major sources generating variation. Natural selection is a process by which characteristics of a population change over time - not individual. Genotypes set of genes responsible for a trait. Adaptation an inherited trait that makes an organism more fit in its environment and has arisen through natural selection. Phenotype depends on the effects of genotype and environment.
