Download DNA 1) What is DNA?

Date: March 14, 2016
Happy Birthday Chloe,
Aim #60: How does DNA store genetic
information?
Julia
& Ella!!!!!!
Do Now: Warm-Up Notebook
Date
Title of Activity
No Warm-Up Today 
Page #
HW:
1) All labs due Wednesday!! Please see me if you think you are missing any labs.
2) Human Phys. Unit 7b Packet due Friday (March 18th)
• Don’t forget Castle Learning!
• Human Phys Fridays!! Weekly Human Phys Review in Room 142 with yours
truly 
3) Genetics Test next Tuesday (p.5) & Wednesday (p.1 & p.7)!!
Aim #60: How does DNA store
the genetic information?
DNA
1) What is DNA?
Deoxyribonucleic acid
Carries the instructions for
cell activities
Nucleic Acids
Nucleotides
DNA or
RNA
Phosphate
Sugar
Base
Bacterial Transformation (Griffith’s
Experiment)
https://www.youtube.com/watch?v=4LU71ubTCZA
2) Griffith’s Experiment:
Harmless strain of bacteria were “transformed” into a
deadly strain and killed the mice.
Griffith called the substance the “transforming factor”.
3) Avery’s Experiment:
Was the transforming factor
Protein or DNA?
Heat treated deadly strain + harmless strain + protein
destroying enzymes  Transformed Bacteria
Heat treated deadly strain + harmless strain + DNA
destroying enzymes  Bacteria did not Transform
Concluded that DNA is the genetic material of the cell.
4) Hershey & Chase Experiment:
Bacteriophage
When only the phage protein coats were labeled, most of
the radioactivity was detected outside the cell. When the
phage DNA was labeled, most of the radioactivity was
detected inside the cells.
5) What are these instructions?
• GENES
• How did we get
our genes?
6) Where are genes found?
Genes
(Smallest)
chromosomes
nucleus
(Largest)
7) What do our genes give us?
Our characteristics or traits
8) How many genes do we have?
46
Thousands on ______
chromosomes
9) How does DNA carry the genes?
• The structure of DNA
allows it to carry the
genetic code
• It is a double helix
made of repeating
nucleotides
10) What is a nucleotide made of?
4 types
Deoxyribose
Subunits of DNA
11) What bases make
up the DNA ladder
rungs?
•
•
•
•
Adenine
(purine)
Thymine (pyrimidine)
Guanine (purine)
Cytosine (pyrimidine)
12) How do the bases pair up?
All …. Teachers
Go …. Crazy
13) What holds the DNA base
pairs together?
Weak hydrogen bonds
3 Hydrogen Bonds
2 Hydrogen Bonds
14) What in the DNA is unique in all
organisms?
The base sequence
15) What part of DNA carries the genetic
code?
The base sequence holds the genetic code.
Each organism has a different sequence of bases
Let’s review
Where is DNA found?
What determines our traits?
Genes
Where are genes located?
What part of DNA carries the
genetic code?
Amoeba Sisters
DNA Structure & Function
https://www.youtube.com/watch?v=_POdWsii7AI
1 Gene = 1 Protein
ALL TEACHERS GO CRAZY
SEMI CONSERVATIVE REPLICATION
ONE OLD STRAND &
ONE NEW STRAND