Upon Fertilization, an Oocyte Completes Its Second Meiotic Division and Produces

Question

Upon fertilization, an oocyte completes its second meiotic division and produces ________.
A) the corona radiata and a polar body
B) the morula and blastocyst
C) the ovum and another polar body
D) the primary oocyte and secondary oocyte

Accepted Answer

Upon fertilization, the oocyte completes its second meiotic division, producing a mature ovum and another polar body. The corona radiata is a layer of cells surrounding the oocyte that is usually shed prior to or during ovulation. The morula and blastocyst are the early stages of embryonic development after fertilization. The primary oocyte is the immature form of the oocyte that undergoes meiosis to become a mature ovum.