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

Question

Quizplus · Accepted Answer

The acrosomal reaction occurs first, allowing the sperm to penetrate the egg. This is followed by the cortical reaction, which prevents polyspermy. After fertilization, the synthesis of the embryo's DNA begins, and then the first cell division occurs.

From Earliest to Latest, the Overall Sequence of Early Development