GMAT Critical Reasoning (CR) | QOTD #9 Scientists wishing to understand the kinetic movements of anci

Scientists wishing to understand the kinetic movements of ancient dinosaurs are today studying the movements of modern day birds, which many scientists believe are descended from dinosaurs. A flaw in this strategy is that birds, although once genetically linked to dinosaurs, have evolved so far that any comparison is effectively meaningless

Which of the following, if true, would most weaken the criticism made above of the scientists’ strategy?

(A) Birds and dinosaurs have a number of important
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