Since each codon consist of 3 nucleotides, 4 cordons can be formed by 12 nucleotides. (but please make sure that you check this answer. I am not completely sure)
Pangea was the supercontinent that had all the landmasses of earth together before the Triassic period and that broke up into Laurasia and Gondwanan. However, Panthalassa is a prehistoric ocean that was surrounding Pangea.
Hope this helps!
Through expanding, some galaxies are on a collision course with us.
