New review paper on polymorphisms and speciation

May 5, 2020

TREE figure

In a new paper in Trends in Ecology and Evolution, Dr Gabriel Jamie and Dr Joana Meier explore the phenomenon that the same polymorphisms often recur in many members of a species radiation (e.g. colour/pattern morphs, heterostyly, mating types, shell chirality). This phenomenon is puzzling because speciation often represents a barrier to the inheritance of the ancestral genetic variation underpinning polymorphisms. Generally, only a subset of the ancestral population go on to become founders of the new species. They outline the characteristics of polymorphisms that help their underlying genetic variation get inherited from ancestral standing variation, re-introduced through introgression or re-invented through mutation and also explore the factors influencing whether the requisite balancing selection operates widely across daughter species so that polymorphisms are maintained in many members of the radiation.


Tanmay Dixit awarded PhD and starting Junior Research Fellowship

Tanmay’s PhD, entitled “Signatures and forgeries: optimality in a coevolutionary arms race” was awarded with no corrections. Huge thanks to collaborators and colleagues who were instrumental to this work, and to examiners James Herbert-Read and Graeme Ruxton. Tanmay will remain on the team and continue conducting fieldwork in Choma as part of the Junior Research fellowship that he is starting at Jesus College, Cambridge.

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