It turns out that early in the origin of many types of animals, there were a lot of branching events in a short period of time.
More Quotes from Sean Carroll:
Before I fired my weapon, Eddie McMellon, who (was) slightly closer than I was, started backing out and saying, 'What are you doing What are you doing' I just thought he pulled and drew a weapon on my partner -- I fired my weapon,Sean Carroll
It is hard to distinguish these events, even with boatloads of data. As you go into deep time, origins are much harder to pick out. And given that there is so much data, you have to ask why aren't you getting any resolution
Sean Carroll
There are many, many cases where DNA has told us about species' relationships that we never would have guessed based on appearances or other characteristics. We need this tree to understand the great story of animal evolution.
Sean Carroll
In general, we'd like to know who's related to whom, and the pattern of the branches of the tree of life.
Sean Carroll
The mechanisms that make the small differences between species are the same ones that make the big differences between kingdoms,
Sean Carroll
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