Which One of the Following Structures Degenerates If a Fertilized

Question

Which one of the following structures degenerates if a fertilized egg does not embed in the uterus?
A) ovary
B) oviduct
C) zona pellucida
D) corpus luteum
E) secondary oocyte

Accepted Answer

The corpus luteum degenerates if a fertilized egg does not implant in the uterus, as it is responsible for producing hormones that maintain the uterine lining for pregnancy.