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Heredity Podcast
Snails, supergenes and a question of colour (Special Episode)
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From the days of Darwin and Mendel, studies on colouration have played a vital role in deciphering the mechanisms of natural selection and genetic heredity. While this work has encompassed many species from all branches of the tree of life, a particularly noteworthy one is the incredibly colour diverse grove snail, Cepaea nemoralis. In this special double-whammy episode, we discuss two recent Heredity papers on this unassuming, yet beautiful, little mollusc by Dr Angus Davison (University of Nottingham) and colleagues. The first takes a quantitative approach to determining the colour phenotypes of over 1000 grove snails, while the second investigates the underlying genetics of this colour polymorphism. The insights gleaned from these studies have important implications for how we conduct studies on animal colouration, and also challenge long held assumptions about the evolution and role of supergenes.
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