Nature publication:
Mechanical tensions as a driver of evolution
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Embryo of the fruit fly Drosophila melanogaster. The activity of two genes is visualized by fluorescence microscopy: Where green and purple colorations meet, the joint activity of the different genes leads to the formation of a head furrow later in development. | Image source: RIKEN / Yu-Chiun Wang
Embryo of the mosquito Chironomus riparius. The activity of two genes is visualized by fluorescence microscopy: Unlike the embryo of the fruit fly, green and purple colorations do not clash; there is no head furrow. | Image source: University of Hohenheim / Verena Kaul
Fruit fly (Drosophila melanogaster) | Image source: University of Hohenheim
Embryo of the mosquito (Chironomus riparius) | Image source: University of Hohenheim