Embryonic development begins with a single egg fertilized by a single sperm, forming a zygote which then divides by mitosis. How many cells are present in the embryo at the conclusion of four mitotic divisions?
A) 2
B) 4
C) 8
D) 16
E) 32

Question

Quizplus · Accepted Answer

After four rounds of mitosis, the cell count doubles with each division: 1 (zygote) becomes 2, then 4, then 8, and finally 16 cells.

Embryonic Development Begins with a Single Egg Fertilized by a Single