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Updated: Sep 16, 2025
12:40
High Throughput Microinjections of Sea Urchin Zygotes
Published on: January 21, 2014
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Digest: The impact of egg and sperm proteins on sea urchin reproductive compatibility
1Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States.
Abstract:
Levitan and Hao (2025) investigate reproductive isolation in sea urchins using fertilization assays, pinpointing amino acid substitutions that may cause isolation between species. Genotyping wild urchins showed that a single substitution in an egg protein could limit hybridization where 2 species coexist. Their findings shed light on how interspecific isolation can evolve and manifest in the wild, with eggs potentially under stronger selection to reduce hybridization due to higher costs.
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