The Following Questions Refer to the Phylogenetic Tree in Figure

Multiple Choice

The following questions refer to the phylogenetic tree in Figure 20.3, depicting the origins of life and of the three domains. Horizontal lines indicate instances of gene or genome transfer.
Figure 20.3
A possible phylogenetic tree for the three domains of life.
-Which portion of Figure 20.3 may ultimately be better depicted as a "ring"?

A) the bacterial lineage
B) the archaean lineage
C) the eukaryotic lineage
D) the trunk of the tree
E) the part corresponding to the first living cell on Earth