The union of the sperm and the egg that results in a cell with 46 chromosomes is called a(n) ________.
A) embryo
B) zygote
C) fetus
D) trophoblast

Question

Quizplus · Accepted Answer

The union of sperm and egg results in the formation of a zygote, which has 46 chromosomes in humans. An embryo is the stage of prenatal development from the time of fertilization (zygote) until the end of the eighth week, a fetus is the stage of prenatal development from the ninth week after fertilization until birth, and a trophoblast is a layer of cells that develops early in embryonic growth and helps to form the placenta.

The Union of the Sperm and the Egg That Results