Which one of the following is a correct developmental sequence? , Which one of the following is a correct developmental sequence?

Solution

D. Ovum-sperm, zygote, blastocyst

Explanation

The development sequence of prenatal development refers the process in which a baby develops from a single cell and changes into an embryo and later in a fetus. Sperm penetrate, and fertilize the ovum. The genetic material of the sperm and egg, then combine to form a single cell called a zygote. The zygote then divides and form a blastocyst.