The cyclin-CDK pairs work during G1 phase are()
A. cyclinA&B and the corresponding Cdk
B. cyclinA&E and the corresponding Cdk
C. cyclinD&E and the corresponding Cdk
D. cyclinB&E and the corresponding Cdk
查看答案
Typical feature of chromosome can be observed in()
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Which of the following statement is NOT correct for anaphase?()
A. In anaphase A, forces dragging chromatids are generated mainly by shortening of kinetochore microtubules and microtubule motor proteins
B. In anaphase A, the shape of cell changes significantly
C. In anaphase B, the distance between two poles increases
D. In anaphase B, interpolar microtubules grow and push themselves apart
Which of the following statement is the CORRECT feature of telophase?()
A. Chromosomes are aligned along the equator plate
B. Mitotic spindle is assembled
C. Nuclear envelope reappears
D. Sister chromatids are segregated
Which statement below is correct about DNA-damage checkpoint?()
A. Its function results in degradation of cyclin.
B. It can only detect single-strand DNA damage.
C. ATM is responsible for detecting double-strand DNA damage.
D. It may block the expression of cyclin
微信支付 
支付宝支付