1. What happens during
interphase?
2. What are the reasons that
a cell will divide?
Logistics
• Strawberry DNA Extraction
Lab due tomorrow
• If you need to make it up
come after school today, or
Tuesday
Today
• Intro to DNA Replication
• DNA Replication Activity
Cell Cycle
Cell Cycle
DNA Replication
DNA Replication
Every 16 days you have a 72%
NEW body
DNA Replication
You lose about 50 million skin
cells every day.
Activity
• Listen carefully
Activity
• What base are you?
Seat Letter
A
B
C
D
E
Base
A
T
C
G
C
Activity
• EVEN numbered groups
(back row) make a DNA
molecule by joining hands
with your matching
nucleotides
Activity
• ODD numbered groups
(front row) you are
nucleotides hanging out in
the nucleus
Activity
• How would you replicate
this DNA molecule efficiently
and accurately?
Activity
• SHOW ME!
Enzymes
Steps
Steps
Steps
Steps
Steps
Steps
DNA Replication
DNA Replication
Result: Semi-conservative
Errors
Activity
• https://www.youtube.com/w
atch?v=5qSrmeiWsuc
• https://www.youtube.com/w
atch?v=27TxKoFU2Nw
DNA Replication