Cell Cycle
Which phase does the DNA replicate?
S (synthesis)
What phase do chromosomes line up in the middle of the cell?
Metaphase
Hydrogen
Genes that act like brake pedals that stop the cell cycle at checkpoints are called
Tumor suppressor genes
G1, S, and G2 (only these 3)
What form is DNA in during Mitosis?
Chromosome
Which strand is built continuously by DNA Polymerase?
Leading strand
Which checkpoint checks to make sure the spindle fibers have correctly attached to the centromeres so that the chromosomes divide evenly?
M-phase checkpoint
What form is DNA in during Interphase?
Chromatin
During anaphase, what SPECIFICALLY divides, what is the term for this form of DNA?
Chromatids separate
Why is DNA said to be "semi-conservative"?
50% of the strand is new while 50% is original therefore half of the original DNA is conserved
What is the name of a mutated gene that causes the cell to divide uncontrollably?
Oncogene
Which phase does a cell prepare for division?
What part of a chromosome does the spindle fiber attach to?
Centromere
Why must a cell repicate or copy its DNA?
If a cell finds too many errors that cannot be repaired, what does the cell do?
Apoptosis
Which phase of the cell cycle do cells spend the majority of their time in?
Interphase
Which part of M-phase is NOT a part of Mitosis?
Cytokinesis
Describe what an Okazaki fragment is:
On the laggins strand, DNA Polymerase moves away from the replication fork causing the new strand to be build in small segments (not continuously) known as Okazaki fragments.
Name a tumor suppressor gene found on your 13th or 17th chromosome that can sometimes be found to be mutated in some people?
BRCA