Chapter 15: Genetic Engineering

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Presentation transcript:

Chapter 15: Genetic Engineering Selective Breeding

What is Selective Breeding? Breeding animals with desired traits for future generations Examples: Hybridization (Examples?) Bringing different organisms together to bring out best traits Allows for disease resistant organisms to be created Inbreeding (Examples?) Breeding organisms with similar characteristics Problem: Genetic disorders occur after continual inbreeding

How can we increase genetic variation? Biotechnology Using technological processes or devices on living organisms Examples: Mutations Radiation and chemicals to change bacteria Drugs Allow plants to keep extra chromosomes which make survival better

What is Recombinant DNA? DNA created by combining DNA from different places What are uses of it? Allows scientists to change the genetic code of an organism Brings in the idea of transgenics Organisms with genes from other organisms Clones Creating an adult organisms from a single cell of another adult organism First multicellular organism clones was Dolly the sheep in 1997

Chapter 15: Genetic Engineering Applications of Genetic Engineering

Agriculture and Industry GM Crops Genetically modified crops Plants that have pesticides in them Harmless to humans Slows rotting and spoiling of plants GM Animals Genetically modified animals Cows that have genes to help produced more milk Growth hormones to create bigger animals with more meat

Health and Medicine Preventing Disease Gene Therapy Golden Rice Changing someone’s genes to get rid of disease Golden Rice Contains Provitamin A Helps vision in infants Transgenic Animals Contain human proteins

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