A ball of about eight cells formed about 50 to 60 hours after fertilization is called a
A)zygote.
B)morula.
C)blastocyst.
D)embryo.

Question

Quizplus · Accepted Answer

A ball of about eight cells formed about 50 to 60 hours after fertilization is called a morula. The morula stage comes after the zygote stage, which is the initial cell formed after fertilization, and before the blastocyst stage, which forms about 4-5 days after fertilization. The embryo stage comes after the blastocyst stage.

A Ball of About Eight Cells Formed About 50 to 60