N659
No user record in our sample, but N659 has activity below (stories or comments). Likely we have partial data — the full bulk-load will fill profiles in.
No user record in our sample, but N659 has activity below (stories or comments). Likely we have partial data — the full bulk-load will fill profiles in.
So far I have read that these are related theories and the "somatic twist" theory is an expansion on the earlier theory of inversion. And there seems to be another related but separate theory called the axial twist…
There's a theory that says an ancestor of all vertebrates just flipped its head around and it stayed that way. (Source: https://arxiv.org/abs/1003.1872). Can someone who knows more about animal physiology explain this…