A zygote is a fertilized egg formed by an egg and a sperm.The zygote undergoes many mitotic events as it develops into a solid ball of cells (ie,blastomeres)called a blastula.What changes occur in this early cleavage?
A)During the initial stages of cleavage,there is a tremendous increase in the number and size of blastomeres.
B)During the initial stages of cleavage,there is a tremendous decrease in the number and size of blastomeres.
C)During the initial stages of cleavage,there is a tremendous increase in the number of cells coupled with a decrease in the size of the cells composing the developing organism.
D)During the initial stages of cleavage,there is no increase in the number of cells of the developing organism,but the size of the cells increases.

Question

Quizplus · Accepted Answer

During the initial stages of cleavage, the zygote undergoes many mitotic events where the number of cells increases rapidly. However, the size of the blastomeres decreases as each new cell is smaller than the original zygote. This process is essential for generating the correct number of cells needed for proper embryonic development. Therefore, Choice C is the correct answer.

A Zygote Is a Fertilized Egg Formed by an Egg