DNA: PHYSICAL PROPERTIES

1
DNA PHYSICAL PROPERTIES

• Nucleic Acids DNA
• Five carbon sugar
• Phosphate group
• Nitrogenous base

2
BASE PAIRINGS

• Adenine-Thymine

3
BASE PAIRINGS

• Guanine-Cytosine

4
DNA MOLECULE
5
IN LAB TODAY PHYSICAL PROPERTIES

• Compare treatment effects on viscosity
• Untreated DNA
• Heated, rapidly cooled DNA
• Enzyme (DNase treated) DNA
• Compare treatment effects on precipitation

6
IN LAB TODAY PHYSICAL PROPERTIES

• Gel Electrophoresis
• Practice loading gels
• Posters of gel photos and radiographs
• Determine length of an unknown DNA molecule

7
IN LAB TODAY CHROMOSOME DEMONSTRATIONS

• Human Chromosomes
• Drosophila polytene chromosomes

8
GENETIC ENGINEERING

• Gene products
• Gene therapy
• Agricultural application
• Eugenic application

9
FINAL REVIEW

• Review materials in lab for final exam
• Labs will not be open to students outside their
  regular lab time