[Campbell Biology P.762] According to the text, how is the Deuterostomia clade primarily def... | Practice Question

According to the text, how is the Deuterostomia clade primarily defined?

  • A: By common developmental features like radial cleavage and formation of the anus from the blastopore.
  • B: By shared DNA similarities.
  • C: By the presence of a coelom and an endoskeleton.
  • D: By being slow-moving or sessile marine animals.

Explanation

The text states: 'Hence, despite its name, the clade Deuterostomia is defined primarily by DNA similarities, not developmental similarities.'