Question

multiple choice question evo - devo studies have revealed that the simplest animals, called ______, contain the same developmental genes as more complex animals. chordates sponges paramecia archaea need help? review these concept resources. rate your confidence to submit your answer. high medium low reading

Explanation:

To solve this, we analyze each option:

• Chordates are more complex animals (e.g., vertebrates), so not the simplest.
• Sponges (Porifera) are among the simplest animals. Evo - devo studies show they have conserved developmental genes with more complex animals.
• Paramecia are protists (not animals in the traditional metazoan sense).
• Archaea are prokaryotes (not animals).

Answer:

B. sponges