By the Time the Fertilized Egg Reaches the Uterus,it Is

Question

By the time the fertilized egg reaches the uterus,it is a hollow ball of cells called a
A) zygote
B) morula
C) blastocyst
D) fetus

Accepted Answer

By the time the fertilized egg reaches the uterus, it has divided multiple times and formed a hollow ball of cells called a blastocyst. A zygote refers to the single-cell that results from the fusion of sperm and egg, while a morula is a solid ball of cells that forms about 4 days after fertilization. A fetus is a developing organism after 8 weeks of gestation.