DNA sequence evidence suggests that plants, fungi, and animals arose from different lineages of unicellular protists. This suggests which of the following?
A. Protists evolved before the other three kingdoms.
B. Early ancestors to plants, fungi, and animals could interbreed.
C. Multicellular organisms arose only once in evolutionary history.
D. All unicellular organisms are now extinct.
E. The animal, plant, and fungal kingdoms contain some single celled organisms.
Answer: A. Protists evolved before the other three kingdoms.
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