1. Deoxyribonucleic Acid
DNA
Deoxyribonucleic
Acid

2. DNA General Information A. Nucleic acid = acid found in nucleus
B. F(x)s
1. Carries & transmits
genetic code
2. Codes for proteins which determine traits
E.g. blue eyes, red hair

3. DNA F(x)s (cont.) 3. Gene = section of DNA that codes for a protein
4. Proteins perform almost all
of the essential life functions
of cells & organisms
5. DNA codes for what an organism
can do and be

4. C. History of DNA Research
Chargaff’s rule
# of Adenines =
# of Thymines
# of Guanines =
# of Cytosines

5. C. History of DNA Research
Rosalind Franklin &
Maurice Wilkins X-ray pattern of DNA

6. C. History of DNA Research
Watson & Crick reveal
3-D model of DNA molecule

7. C. History of DNA Research
(1958- Franklin dies)
Watson & Crick (& Wilkins)
Nobel Prize for 3-D model of DNA
?’s 1-9

8. D. DNA Structure
Shape =
double helix
(2 strands)
coiled ladder

9. D. DNA Structure 2. Building block = nucleotide 3. Nucleotide =
Phosphate
Sugar (deoxyribose)
Nitrogenous Base
(A, T, C, or G)
Hydrogen bond
between N-bases

10. D. DNA Structure ?’s 10-14 4. Complementary base pairing
N-bases always pair
with same partner
Adenine with Thymine
Cytosine with Guanine
?’s 10-14

11. D. DNA Structure GTAATCGTA If we know what one strand of
DNA molecule is,
we know the other
What is the other side if one side is CATTAGCAT ?
GTAATCGTA

12. D. DNA Structure
5. Sequence of bases is the genetic code

13. 3D DNA Model Animation ?’s 15-17
animation of
?’s 15-17