All Subjects



AP Bio



Unit 6

6.8 Biotechnology

1 min readnovember 29, 2021


Lani Himegarner

AP Biology 🧬

Bookmarked 9.6k • 333 resources
See Units

It is possible to artificially alter, modify, manipulate, and analyze DNA and RNA. Scientists use quite a few techniques:

1️⃣ Electrophoresis

Electrophoresis: molecules are separated by size and not charge. DNA is negatively charged (because of the phosphate groups), and therefore the longer strands will migrate towards the positive end of the chamber. Through this, the number, size, and relative abundance of DNA fragments can be determined. 

2️⃣ Polymerase Chain Reaction

DNA fragments can be amplified during polymerase chain reaction (PCR). 

3️⃣ Foreign DNA

“Foreign” DNA is introduced to bacterial cells, so it will replicate it as its own. The byproduct will then be more abundant than it would naturally occur. For example, this has been used to make insulin.

4️⃣ DNA Sequencing

Scientists have also used DNA sequencing to determine and analyze the order of nucleotides within a DNA molecule. This is used to study genetic disorders.

Image courtesy of Giphy.

Check out the AP Bio Unit 6 Replays or watch the 2021 Unit 6 Cram


Was this guide helpful?

Fiveable logo
Join Fiveable for free
Create a free account to bookmark content and compete in trivia
Hours Logo
Studying with Hours = the ultimate focus mode
Start a free study session
Browse Study Guides By Unit
📆Big Reviews: Finals & Exam Prep
✍️Free Response Questions (FRQ)
👏General Review
🧐Multiple Choice Questions (MCQ)
🧪Unit 1: Chemistry of Life
🧬Unit 2: Cell Structure and Function
🔋Unit 3: Cellular Energetics
🦠Unit 4: Cell Communication and Cell Cycle
👪Unit 5: Heredity
👻Unit 6: Gene Expression and Regulation
🦍Unit 7: Natural Selection
🌲Unit 8: Ecology
FREE AP bio Survival Pack + Cram Chart PDF
Sign up now for instant access to 2 amazing downloads to help you get a 5