What initiates the cleavage of the zygote after fertilization?
Understand the Problem
The question is asking for the specific process that triggers the cleavage of a zygote following fertilization, highlighting a key event in embryonic development.
Answer
Cyclin B/CDK1 complex initiates zygote cleavage.
The cyclin B/CDK1 complex, also known as the maturation promoting factor (MPF), is responsible for initiating the cleavage of the zygote after fertilization. MPF promotes entry into mitosis, leading to the processes of karyokinesis (mitosis) and cytokinesis, which together result in zygote cleavage.
Answer for screen readers
The cyclin B/CDK1 complex, also known as the maturation promoting factor (MPF), is responsible for initiating the cleavage of the zygote after fertilization. MPF promotes entry into mitosis, leading to the processes of karyokinesis (mitosis) and cytokinesis, which together result in zygote cleavage.
More Information
After fertilization, the zygote undergoes rapid mitotic divisions known as cleavage. Cyclin B/CDK1 (MPF) is essential in driving these processes and ensuring proper embryonic development.
Tips
A common misunderstanding is assuming that the physical division of cells solely initiates cleavage; however, it is crucial to understand the role of biochemical factors like cyclin B/CDK1.
Sources
- Cleavage (Embryo) - Wikipedia - en.wikipedia.org
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