4.1 The cell cycle: overview Flashcards
1
Q
Cell cycle
A
Growth (Interphase) + division (mitosis + cytokinesis)
2
Q
Interphase
A
growth phase between cell divisions (amount of nuclear DNA doubles)
3
Q
Division (M phase )
A
Mitosis + cytokinesis
4
Q
Mitotic index
A
% time spent in mitosis (3-5 % in eukaryotes)
5
Q
Mitosis + cytokinesis
A
~ 1 hour
6
Q
G1
A
Cellular contents, excluding chromosomes are duplicated
7
Q
G0
A
-
8
Q
S - phase
A
-
9
Q
G2
A
- > cell prepares for cell division
- > checking new chromatids for errors
- > transient arrest occur in G2
- > shorter than G1 + more uniform in duration (4-6 hours)
10
Q
M - Phase
A
-> sister chromatids separated + partioned
11
Q
Mitosis + Cytokinesis overview
A
- > continuous process but divided into 5 stages
- > mitosis ensures that:
