What is DNA? -It is a very large molecule -It resides inside every cell of every living being. DNA is like an instruction manual for building living things.

Jurrasic Park! Extracted DNA from Dinosaur blood. Added Dinosaur DNA to frog cells. What could you get (in theory)?

Genetic Engineering Genes are sections of DNA that code for a specific characteristic. We can take a gene from one organism and add it to another.

How can you get pure DNA out of the cell? mixture We make a mixture. dissolve We dissolve the DNA. solution We separate the mixture from the solution. precipitate We precipitate the DNA from solution. Sound familiar? Through Chemistry !

Instructions 1.Put strawberry into plastic bag and mush. 2.Add 10 mL of extractant solution and mix well. Think Think: What’s happening to the DNA? 3. Filter the mixture into a test tube (no more than half full!) 4.Carefully add Isopropanol. Do NOT mix! 5.Gently stir until you see thin white strands form.

What is cloning? - A sheep called Dolly -An extinct animal. -Lots of cattle Clones are identical copies of living things. Humans have cloned a lot of things already.