Welcome Binary!
Binary writes:
This fact isn't remarkable, however, until one considers that organisms which are closer on the evolutionary tree always have more similar cytochrome c than those which are farther apart. To me, the best explanation for this is common descent.
A similar thing happens with the occurrence of
Endogenous Retrovirii.
By the way, if you're willing, your experiences might make for an interesting thread at some point...
Edited by RickJB, : No reason given.