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Biology Sections 3 and 4
Terms in this set (9)
What is transformation?
A process in which a cell incorporates DNA from outside the cell into its own DNA.
How can you tell if a transformation experiment has been successful?
If transformation is successful, the DNA will be integrated into one of the cell's chromosomes.
How are genetic markers related to transformation?
A genetic marker makes it possible to distinguish a cell that has been transformed from those that have not.
What are two features that make plasmids useful for transforming cells?
They have DNA sequences that promote plasmid replication, and they have genetic markers.
Compare the transformation of a bacterium cell with the transformation of a plant cell.
Recombinant plasmids are simply taken up by bacterial cells. Plant cells do not naturally take up DNA. Recombinant plasmids are either directly injected into cells or carried into the cell by an infecting bacterium.
List one practical application for each of the following: transgenic bacteria, transgenic animals, transgenic plants.
(It says sample answers..so you guys can't all use this) Transgenic bacteria-to produce human proteins for medical use, produce materials for plastics; animals-study genes, improve food supply, provide human proteins; plants-improve food supply, produce human antibodies, produce plastics.
What is a transgenic organism?
An organism that contains genes from another species.
What basic steps were followed to produce Dolly?
The nucleus of an egg cell is removed and replaced with a nucleus taken from another adult . This egg is then placed in the reproductive system of a foster mother, where it develops normally.
List reasons you would or wouldn't be concerned about eating genetically modified food.
Some may be concerned because the foods might harm humans, for example, by causing allergies. Others will not be concerned because they think the genetic modifications will not affect humans adversely.
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