In many organisms, cytoplasmic movements triggered by sperm entry are well described. In sea urchins, ascidians and frogs, for example, they are known to be associated with successful progress of developmental events, such as the establishment of embryo polarity1,2,3,4,5,6. However, the nature, mechanism or consequences of cytoplasmic movements caused by sperm entry into the mammalian egg are curr
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Host selection behaviour is thought to be a key process involved in diversification of phytophagous (plant-feeding) insects. Many lepidopteran species have evolved to select a limited range of host plants, the most extreme state being monophagous feeding on a single species. Swallowtail butterflies, which belong to the family of Papilionidae, selectively utilize a limited number of plants belongin
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