試題詳解

32. How does RecA bring about strand exchange?
(A)RecA acts as a helicase, unwinding DNA in localized regions
(B)RecA monomers bind to ssDNA to form a nuclcoprotein filament
(C) RecA monomers interact only with ssDNA and immediately dissociate when binding to dsDNA
(D)RecA forms a tetramer that wraps aro und DNA at specific sites that must be cleaved by a nuclease
(E)none of the above