Scientists have uncovered a key mechanism in jellyfish embryos that provides new insights into how the body plan of these animals develops along a central axis from their “head” to “tail.” Scientists have uncovered a key mechanism in jellyfish embryos that provides new insights into how the body plan of these animals develops along a central axis from their “head” to “tail.” Plants & Animals Cell & Microbiology Phys.org – latest science and technology news stories