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twins: semi-identical

  1. kamalktk

    Semi-Identical Twins

    So rare doctors have identified only the second ever case. https://www.cnn.com/2019/02/28/health/rare-twins-semi-identical-australia-trnd/index.html more at link above: "But in this case, Fisk said, when the egg was fertilized by two sperm, it split the three sets of chromosomes into two...
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