The very beginning of development involves the _________ dividing into a ball of cells called the _________ and travelling down the fallopian tubes.
A)blastocyst;zygote
B)zygote;fetus
C)blastocyst;embryo
D)zygote;blastocyst

Question

Quizplus · Accepted Answer

The zygote is the first cell of a new organism formed after fertilization. The zygote then undergoes rapid cell division and forms a ball of cells called the blastocyst, which travels down the fallopian tubes towards the uterus for implantation. Thus, the correct answer is D (zygote;blastocyst).

The Very Beginning of Development Involves the _________ Dividing into a Ball