I'm reading this web page which talks about phylogenies and DNA sequencing:
A certain sentence says, "If we consider dolphins and sharks to be closely related because they share a similar shape we would be mistaken."
If we were to take the DNA sequence of the dolphins and sharks and compare the genes encoding for shape, wouldn't they be very similar? Wouldn't we then be able to conclude that dolphins and sharks are similar?
Or is the workaround that we would examine the entire genome, i.e. the entire DNA sequence, to see if that's the only similarity they have?