Genetic Engineering 2

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Transgenic Goat

Slide 11

Desired DNA is

added to an egg cell.

How to Create a Transgenic Animal

Slide 12

Ha Ha Ha!

Slide 13

Genetic Engineering and Crime Scenes……

Slide 14

Polymerase Chain Reaction PCR

PCR allows scientists to make many copies of a piece of DNA.

Heat the DNA so it “unzips”.

2. Add the complementary nitrogenous bases.

3. Allow DNA to cool so the complementary strands can “zip” together.

Slide 15

Gel Electrophoresis

This technology allows scientists to identify someone’s DNA!

Slide 16

Steps Involved in Gel Electrophoresis

1. “Cut” DNA sample with restriction enzymes.

2. Run the DNA fragments through a gel.

3. Bands will form in the gel.

4. Everyone’s DNA bands are unique and can be used to identify a person.

5. DNA bands are like “genetic fingerprints”.