How Blood Evolved (Many Times)
- Episode aired Jan 15, 2019
- 10m
Blood first appeared in the Precambrian period and proteins metal complexes to sequester oxygen appeared as animals grew larger. But different taxonomic groups used different proteins and me... Read allBlood first appeared in the Precambrian period and proteins metal complexes to sequester oxygen appeared as animals grew larger. But different taxonomic groups used different proteins and metals and for different purposes.Blood first appeared in the Precambrian period and proteins metal complexes to sequester oxygen appeared as animals grew larger. But different taxonomic groups used different proteins and metals and for different purposes.