#permaculture #retrosuburbia #fromthegarden #2fruits5veg Midummer breakfast - hom…
A body made entirely of head-like organs
Using state-of-the-art single-cell and gene expression analyses, the researchers mapped the cell types of young post-metamorphic sea urchins.
They found that the adult body plan is largely "head-like."
Genes that in other animals define trunk structures are active only in internal organs such as the gut and the water vascular system.
In sea urchins, a true trunk region is missing altogether.
An 'all-body brain&…