48. From earliest to latest, the overall sequence of early development proceeds in which of the following sequences?
(A) first cell division → synthesis of embryo's DNA begins → acrosomal reaction → cortical reaction
(B) cortical reaction → synthesis of embryo's DNA begins → acrosomal reaction → first cell division
(C) cortical reaction → acrosomal reaction → first cell division →synthesis of embryo's DNA begins
(D) acrosomal reaction → cortical reaction →synthesis of embryo's DNA begins → first cell division
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統計: A(0), B(1), C(0), D(2), E(0) #3056711
統計: A(0), B(1), C(0), D(2), E(0) #3056711