In the Holliday Model for Recombination, Which Is Not True

Multiple Choice

In the Holliday model for recombination, which is not true

A) one of two recombination products are formed depending on how the branch is cleaved
B) strand exchange leads to an intermediate structure with crossed single strands
C) two homologous duplexes are aligned
D) the branch can move along the strands leading to additional strand exchange
E) the strand exchange is initiated by DNase I nicking.