 Colors refer to early embryo: Red=right side, blue=left side, black=dorsal, white=ventral  The axial twist hypothesis was designed to explain how the pattern of contralateral organization, decussations and chiasms develops, and why this pattern is evolutionary stable.
<fluency>  Colors refer to early embryo: Red=right side, blue=left side, black=dorsal, white=ventral  The axial twist hypothesis was designed to explain how the pattern of contralateral organization, decussations and chiasms develops, and why this pattern is evolutionary stable.
 Colors refer to early embryo: Red=right side, blue=left side, black=dorsal, white=ventral . The axial twist hypothesis was designed to explain how the pattern of contralateral organization, decussations and chiasms develops, and why this pattern is evolutionary stable.