ZFIN Image: Zhang et al., 2022, Fig. 1

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Figure Caption

Fig. 1 Schematics of somitogenesis.

a The Clock and Wavefront model: antagonistic gradient of Fgf8 (originating from the posterior PSM, green) and RA (originating from the somites, violet) define a wavefront which interacts with a particular phase of the segmentation clock (in the PSM, red) to generate somites at periodic times and positions. b Kymograph of somitogenesis from 7 to 20 somites. The tail elongates at a constant rate V_tail while the PSM shrinks at a roughly constant rate V_PSM resulting in a somite wavefront propagating⁵ (in the lab frame) at a rate V_front = V_tail − V_PSM.

Acknowledgments

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