There are significant differences in the skull shapes of the different types of giraffe.
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Female moles evolved to have high testosterone levels, making them fiercer diggers and mothers. Female hyenas share this trait, but it means they must give birth through a male-like phallus.
We wanted to find out which biological phenomena are crucial for pattern formation and which are just incidental. These sorts of questions can be answered with mathematical modelling.
South African sharks have low levels of genetic diversity. This could pose a threat to their survival as a species.
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Postdoctoral Researcher in management and conservation of white sharks, Stellenbosch University
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Jenny Graves is a Friend of The Conversation.
Distinguished Professor of Genetics and Vice Chancellor's Fellow, La Trobe University
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Professor of Mathematical Biology and Public Engagement, University of Bath
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Director of Conservation (Giraffe Conservation Foundation), and Adjunct Lecturer/Assistant Professor, University College Dublin
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Post-doctoral fellow, Department of Biological Sciences, University of Cape Town