Which Bind to
Cell Cycle Regulation
Depends on
Cyclin
Dependent
Kinases
Cyclins G1
Checkpoint
G2
Checkpoint
M Checkpoint
1. Is the cell big
enough to divide?
2. Does the cell
have enough
nutrients to
divide?
3. Is the DNA clear
of mistakes?
Yes/pass
Cell moves
on to DNA
replication
NO/Fail
Cell moves
back to G0
phase until it
is ready to
move on
1. Did the DNA
copy correctly in
the S phase?
2. Is the cell ready
for division?
Yes/pass
Cell moves
on to M
phase
NO/Fail
Cell fixes
DNA.
Or
Cell self-
destructs
(Apoptosis)
1. When the DNA
lines up in the middle
(metaphase), will
each cell get the same
amount of DNA?
2. Are the spindle
fibers attached
correctly to the
centromeres?
Yes/pass
Cell divides
NO/Fail
Cell self-
destructs
(Apoptosis)
Regulate the
progression
of the cell
cycle
