ch. 13 recombinant dna technology and genetic engineering
TRANSCRIPT
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Ch. 13 RECOMBINANT DNA TECHNOLOGY AND GENETIC
ENGINEERING
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Recombinant DNA
• A DNA molecule carrying a new combination of genes.
• Human DNA is put into bacteria then it reproduces.
Used for production of human insulin for diabetics and other medications.
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Transgenic Organisms
• Transgenic means the organism has one or more genes from a different species inserted into their DNA.
• Transgenic plants-genes to make them grow faster and be resistant to disease
• Transgenic animals-genes added to have them make human proteins in their milk for disease treatment or for research
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Gel Electrophoresis
• A method that sorts proteins and nucleic acids based on their electric charge.
• Restriction fragments-
DNA pieces used
for comparisons
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DNA Fingerprints
• The pattern of DNA formed during gel electrophoresis. Used by law enforcement.
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Human Genome Project
Started 1990Completed 2003
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Human Genome Project
• Goal: To identify those genes that are responsible for particular traits, especially those associated with diseases.
• What they did: Mapped and sequenced DNA for all genetic traits.
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Human Genome
• Supporters hope we can cure many genetic disorders.
• Opponents are afraid that the information could be used to allow parents to pick their children's genetic make up
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Cloning
• Creating genetically identical individuals from a single cell from an adult organism.
• Process involves removing the nucleus from an egg cell and replacing it with the nucleus of an adult cell.
• The embryo divides and is implanted into a female animal for normal development
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Cloning
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Cloning
• The adult and the clone are genetically identical, same DNA but different ages.
• Support: It is hoped that we can clone animals to produce more food and possible medical advances.
• Oppositions: People fear that there will be an attempt to clone humans .