1
Q
What is the most crucial step when transitioning from fertilization to cleavage?
A
The activation of the mitosis promoting factors
2
Q
What is cylin B?
A
A larger subunit of the MPF that initiates mitosis
3
Q
What does cyclin B regulate?
A
Cyclin dependent kinase
4
Q
What does CDK do?
A
It phosphorylates the proteins that are necessary for mitosis
5
Q
What happens if there is no cyclin B?
A
There will be no CDK activation and no mitosis as a a result
6
Q
What is the mid-blastula phase?
A
This is a phase where the zygote becomes independent and transcribes its own genes
7
Q
What are the 3 outcomes of the MBP?
A
- There are G1 and G2 phases added
- Cells no longer divide synchronously because they use MPF
- Independent of the maternal genes but transcribe their own zygotic genes in gastrulation mainly
8
Q
A
Coding Terms
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