In the early stages of vertebrate development, the process of cleavage yields successive blastomeres. How are these blastomeres described?Multiple choice question.They are about the same size as the original zygote.They grow larger and larger.They become smaller and smaller.They begin cellular differentiation immediately.
Question
In the early stages of vertebrate development, the process of cleavage yields successive blastomeres. How are these blastomeres described?Multiple choice question.They are about the same size as the original zygote.They grow larger and larger.They become smaller and smaller.They begin cellular differentiation immediately.
Solution
The correct answer is: They become smaller and smaller.
In the early stages of vertebrate development, the process of cleavage involves the division of the fertilized egg, or zygote, into multiple cells called blastomeres. As the zygote divides, it does not increase in size. Instead, each division produces smaller and smaller cells. Therefore, the blastomeres become progressively smaller with each round of division.
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During which stage of development is the egg fertilized by the sperm and the zygote undergoes cleavage?Multiple choice question.Embryonic periodFetal periodPre-embryonic period
Which are true statements regarding cleavage and the blastula?Check All That ApplyCleavage is the division of a zygote into smaller and smaller cells.Cleavage is the division of a zygote into smaller and smaller cells.The blastula is a solid ball of cells.The blastula is a solid ball of cells.Cleavage generally occurs slowly.Cleavage generally occurs slowly.Cleavage patterns are identical among different animal species.Cleavage patterns are identical among different animal species.The presence of yolk may impede cleavage.
What is the developing structure called when the zygote divides and forms groups that develop into different tissues and organs?
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