Embryo-eggshell interaction counteracts chiral bias in early Drosophila morphogenesis
This study reveals that while the inherent chirality driven by Myo1D causes a variable left-right twisting bias during *Drosophila* germ band extension, this instability is counteracted and corrected by Scab integrin-mediated friction between the embryo and the eggshell, ensuring the morphogenetic process remains invariant.