[Campbell Biology P.660] The text states that "An ongoing debate involving the unikonts conc... | Practice Question

The text states that "An ongoing debate involving the unikonts concerns the root of the eukaryotic tree." Why is understanding the root of the eukaryotic phylogenetic tree considered significant for scientists?

  • A: It helps determine the exact number of species that existed in the earliest eukaryotic groups.
  • B: It allows scientists to precisely identify which modern eukaryotic supergroup is the most diverse.
  • C: Knowing the root helps infer characteristics of the common ancestor of all eukaryotes and understand early eukaryotic evolution.
  • D: It provides definitive proof that all eukaryotes originated from a single bacterial ancestor through gene transfer.

Explanation

The text explicitly states, "If the root of the eukaryotic tree were known, it would help scientists infer characteristics of the common ancestor of all eukaryotes." This inference is crucial for understanding the earliest stages of eukaryotic evolution.