Lesson 3: Introduction to DNA

What is DNA?
Where is DNA found?
How is it found at a crime scene?
How is DNA collected at a crime scene?
How is DNA evidence preserved?

DNA
Preservation
Collection
Chain of custody
SWAB
NDIS

HS-LS3-3: Apply concepts of statistics and probability to explain the variation and distribution of expressed traits in a population.
HS-ETS1-3: Evaluate a solution to a complex real-world problem based on prioritized criteria and trade-offs that account for a range of constraints, including cost, safety, reliability, and aesthetics, as well as possible social, cultural, and environmental impacts.  

NA

DOK 1: define DNA terms.
DOK 2: explain DNA replication
DOK 1: define DNA profiling.
DOK 2: describe gel electrophoresis.

OJ Simpson case

DNA is only found in blood.
DNA profiling is always 100% accurate.

Visual aids, hands-on activities, and varied reading materials.
Leveled assignments and assessments.
Opportunities for student choice in projects and presentations.
Small group and individual support.

Reconstruct OJ Simpson crime based on DNA evidence

Simulated blood

Electrophoresis materials

Mock crime scene