How many days after fertilization does the zygote become a ball of cells?
A) five days
B) four days
C) one to two days
D) six to eight days
E) it depends on the age of the mother

Question

Quizplus · Accepted Answer

The zygote undergoes cleavage, dividing into two cells, then four cells, and so on, until it becomes a ball of cells called a morula. This process takes about one to two days.

How Many Days After Fertilization Does the Zygote Become a Ball