Question

question 2 of 10
what is a zygote?
a. a ball of about 100 cells
b. a sperm fused with an egg
c. a structure that nourishes the fetus
d. an unfertilized egg

Explanation:

A zygote is formed when a sperm cell fuses with an egg cell during fertilization. It is the first cell of a new organism. Option A describes a blastocyst at a certain stage, option C refers to the placenta, and option D is an ovum before fertilization.

Answer:

B. A sperm fused with an egg