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Penetration of eggs. Formation of the micropyle (arrows) provided the first evidence that fertilization occurred for all three crosses with both hermaphrodites tested. H ♂ = hermaphrodite sperm; H ♀ = hermaphrodite eggs; RS ♂ = sperm from wild Rabbit Slough (AK, USA) male; RS ♀ = eggs from wild Rabbit Slough female.
