What is the difference between recombination and reassortment of viruses?
What is the difference between recombination and reassortment of viruses?
Reassortment is the switching of viral RNA (gene) segments in cells infected with two different influenza viruses. The term recombination is often used incorrectly for the process of reassortment. Although reassortment occurs for influenza A, B and C viruses it does not occur among A, B and C virus types.
What is the difference between reassortment and recombination?
The figure defines reassortment as the emergence of a new strain via the replacement of whole genes from another (related) virus, and defines recombination as the insertion of fragments of genes into a new viral strain from another genome, potentially from the host.
Is Flavr Savr recombinant DNA technology?
The Flavr Savr Tomato Recombinant DNA technology = GE = GM = transgenic crops, is now widely used in agriculture to create organisms (GM/GMOs) that produce GM crops. The first GM food was the Flavr Savr tomato, produced by the Calgene Company.
What are examples of recombinant DNA?
For example, insulin is regularly produced by means of recombinant DNA within bacteria. A human insulin gene is introduced into a plasmid, which is then introduced to a bacterial cell. The bacteria will then use its cellular machinery to produce the protein insulin, which can be collected and distributed to patients.
How does recombinant virus work?
Viral recombination occurs when viruses of two different parent strains coinfect the same host cell and interact during replication to generate virus progeny that have some genes from both parents.
How do you make a recombinant virus?
A recombinant virus may occur naturally or be produced by recombining pieces of DNA using recombinant DNA technology.
What is the meaning of reassortment?
Reassortment is the switching of viral RNA (gene) segments in cells infected with two different influenza viruses. The term recombination is often used incorrectly for the process of reassortment.
Which one is Flavr Savr?
Flavr Savr (also known as CGN-89564-2; pronounced “flavor saver”), a genetically modified tomato, was the first commercially grown genetically engineered food to be granted a license for human consumption.
How does Flavr Savr work?
The FLAVR SAVR™ tomato was developed through the use of antisense RNA to regulate the expression of the enzyme polygalacturonase (PG) in ripening tomato fruit. This enzyme is one of the most abundant proteins in ripe tomato fruit and has long been thought to be responsible for softening in ripe tomatoes.
What is recombinant DNA used for?
Recombinant DNA technology has also proven important to the production of vaccines and protein therapies such as human insulin, interferon and human growth hormone. It is also used to produce clotting factors for treating haemophilia and in the development of gene therapy.
What is the purpose of recombinant DNA?
Recombinant DNA Technology. Recombinant DNA technology is an extremely important research tool in biology. It allows scientists to manipulate DNA fragments in order to study them in the lab. It involves using a variety of laboratory methods to put a piece of DNA into a bacterial or yeast cell.