Which finding led to the conclusion that sea squirts are more closely related to vertebrates than scientists had previously thought?
A) Data from CT scans
B) The finding that larvae have notochords
C) The discovery of behavioral similarities in sea squirts and vertebrates
D) Newly discovered fossils in China
E) The development of maximum likelihood methods

Question

Quizplus · Accepted Answer

The finding that sea squirt larvae have notochords, a defining characteristic of chordates, led scientists to conclude that sea squirts are more closely related to vertebrates than previously thought. This evidence suggests that sea squirts and vertebrates share a common ancestor.

Which Finding Led to the Conclusion That Sea Squirts Are