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Homologous hox genes in such different animals as insects and vertebrates control embryonic development and hence the form of adult bodies. These gene
Homologous hox genes in such different animals as insects and vertebrates control embryonic development and hence the form of adult bodies. These genes have been highly conserved through hundreds of millions of years of evolution.
Turing's 1952 paper explained mathematically how patterns such as stripes and spots, as in the giant pufferfish, may arise, without molecular evidence
Turing's 1952 paper explained mathematically how patterns such as stripes and spots, as in the giant pufferfish, may arise, without molecular evidence.
A gene regulatory network
A gene regulatory network
Heliconius erato
Heliconius erato
George Romanes's 1892 copy of Ernst Haeckel's controversial embryo drawings
George Romanes's 1892 copy of Ernst Haeckel's controversial embryo drawings
Drawing by Wilhelm His of chick brain compared to folded rubber tube, 1874. Ag (Anlage) = Optic lobes, matching bulges in rubber tube.
Drawing by Wilhelm His of chick brain compared to folded rubber tube, 1874. Ag (Anlage) = Optic lobes, matching bulges in rubber tube.