Which of the following is not a domain in Woese and Fox's phylogenetic tree?

• A. Archaea
• B. Protista
• C. Bacteria
• D. Eukarya

Answer: (B)

Verified step by step guidance

1. Understand that Woese and Fox's phylogenetic tree classifies all life into three domains based on genetic and molecular evidence.
2. The three domains in Woese and Fox's classification are: Archaea, Bacteria, and Eukarya.
3. Recognize that 'Protista' is not a domain but rather a kingdom within the domain Eukarya.
4. Recall that the domain Eukarya includes all organisms with eukaryotic cells, which have a nucleus and other membrane-bound organelles.
5. Conclude that 'Protista' is not a domain in Woese and Fox's phylogenetic tree, as it is part of the Eukarya domain.