Assume That the Transmission of Antibiotic-Producing Bacteria That Live as Mutualists

Multiple Choice

Assume that the transmission of antibiotic-producing bacteria that live as mutualists with leaf cutter ants is strictly vertical (i.e., bacteria are only transmitted from queens to their offspring) . What would you expect the topology of a phylogeny for the bacteria to look like relative to the phylogeny of their ant partners?

A) The topologies should not correspond more than would be expected under a random model.
B) The topologies should closely correspond to one another.
C) The topologies should correspond less than would be expected under a random model.
D) Deep nodes will correspond, but not nodes that are located toward the tips of the tree.