Genetic Engineering

Biotechnology Use of biology for industrial or other practical purposes DNA Fingerprinting Genetic engineering

DNA Fingerprinting A DNA fingerprint is a representation of part of your DNA DNA fragments are separated by the process of electrophoresis Since each individual has different DNA, we can use these for identification. Murder and rape suspects Paternity cases

DNA Electrophoresis Separates DNA fragments by size DNA molecules are cut into pieces by restriction enzymes and move through agarose gel as electricity is applied

Who Did It?

Paternity Testing Can you tell who the father is?

DNA Fingerprinting Activity What is a DNA fingerprint? What is a “hypervariable region?” Why are these significant to DNA fingerprinting? How are DNA fragments separated? Solve Case 1 Solve Case 2 Solve Case 3 (Q5 and Q6) Do you think DNA fingerprinting should be considered valid evidence in court? Why or why not?

Genetic Engineering Genetic engineering is very controversial Cloning Adding or changing genes

Cloning Clone- genetically identical copy of an organism This can happen naturally in nature Asexual reproduction More controversial in mammals Low success rate Ecological concerns

Genetically Modified (GM) Foods Changing an organism’s DNA to give it new traits Transgenic organism- has one or more genes from another organism inserted into its genome This is easily accomplished in plants

Bt Corn The Bt gene makes pesticide When added to corn, Bt helps protect corn from insects Smaller amounts of chemical pesticides needed Food can be produced more quickly and cheaply