left – Right Asymmetry of the Vertebrate Body Derives From Molecular Asymmetry in the Early Embryo Vertebrates may look bilaterally symmetrical from the outside, but many of their internal organs—the heart, the stomach, the liver, and so on—are highly asym- metric. This asymmetry is quite reproducible: 99.98% of people have their heart on the left.
Nagu näha, siis vastuse leidmine on päris raske, aga lendamine on hoopis imelihtne - tuleb vaid maa poole viskuda ja mööda kukkuda.