The correct answer is: b. A sperm joining an egg to form a zygote.
Fertilization specifically refers to the process where a sperm cell combines with an egg cell to create a zygote, initiating the development of a new organism.
Which of the following describes fertilization?
a. Cell differentiation to form a blastula
b. A sperm joining an egg to form a zygote
c. Sperm and egg production
d. Formation of germ layers in a deuterostome
1 answer