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Fig. 2 | BMC Evolutionary Biology

Fig. 2

From: Diversification and hybrid incompatibility in auto-pseudogamous species of Mesorhabditis nematodes

Fig. 2

Phenotypes of wild-type and hybrid embryos. a-b Still images from DIC recordings of representative amphimictic and gynogenetic embryos in wild-type M. simplex JU2864 (a) or in a gynogenetic hybrid embryo from a cross between M. simplex JU2864 females and M. belari JU2817 males (b). Embryos before and during the first cell division are shown in the upper and lower panels, respectively. c-d Fixed specimen during the reformation of pronuclei in wild-type M. simplex (c) and hybrid embryos (d). Microtubules are in green and DNA in magenta. The second polar body of the amphimictic embryo is on a different focal plane and not visible here. In (d), the sperm DNA has entered the embryo shown on the lower panel but not that on the upper panel. The polar body is indicated with a star and the centrosomes with arrows. Scale bar is 10 μm

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