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influenza A viruses can trade genetic materials with the viruses of other species. Two different strains trade or merge material, a process known as an antigenic shift.
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Small molecules that bind with self-proteins to produce antigenic substances are called?
Small molecules that bind with self-proteins to produce antigenic substances are called happens. The unique area that a lymphocyte recognizes and binds to an antigenic determinant.
What is the difference between antigenic and phase variation?
The Phase Variation is the reversible ability of some bacteria to turn an and off the expression of genes coding for the surface antigens . While the Antigenic Variation is the modification of the gene for an expressed surface antigen by genetic recombination with one of many variable unexpressed DNA sequences. In this manner , the expressed surface antigen can assume many different antigenic structures
How many nucleotides would cause a frame shift mutation?
Adding or subtracting just one nucleotide would cause a frame shift mutation.
Was the sequence a result of point or frame shift mutation?
No
Which of the following is a point mutation that does not produce a frame shift?
A point mutation that does not produce a frame shift is when one single base is replaced by a different base. This changes the DNA sequence, but does not cause a frame shift because it is a switch not an addition or subtraction of a base.
Is swine flu H1N1 an antigenic shift or drift?
Swine flu H1N1 is considered an antigenic shift, as it resulted from a reassortment of genetic material from different influenza virus strains in animals. This led to the emergence of a new subtype that can infect humans.
What is an antigenic shift?
influenza A viruses can trade genetic materials with the viruses of other species. Two different strains trade or merge material, a process known as an antigenic shift.
What contributes to antigenic shift in influenza viruses?
a segmented genome
What are difference between antigen drift and antigenic shift?
Both are mutation occurs in virus (usually influenza). But the difference is: antigenic drift are mutation occurs in viral DNA/RNA that cause a person to be re-infected by the virus. while antigenic shift are mutation occurs in viral characteristic, which cause transition from being able to infect poultry ONLY (not human), --> able to infect BOTH poultry and human.
What is the suffix of antigenic?
The suffix of antigenic is -ic.
Does the influenza virus readily change the expressions of its genetic material?
RNA genome of influenza virus is segmented in to 7 pieces. It has the unique property of undergoing two types of genetic variation ie antigenic drift and antigenic shift. In antigenic drift the antigenic variations are minor where genetic recombination take place between strains of two similar species whereas in antigenic shift the recombination take place between strains of dissimilar species leading to major antigenic variations and hence seasonal epidemics.
Antigenic determinants is the site of an antobody?
Words " Antigenic Determinant " itself yells that it is on antigen
How were flu pandemics created?
antigenic shift. That shift produces a new subtype that is different from the two parent viruses. When the new subtype contains genes from the human virus,a pandemic resulted because there was no immunity to the virus and no vaccine to protect against it.
What are haptens?
antigenic when bound to proteins
What is antigenic variation?
An antigenic variation is the mechanism by which an infectious organism changes its surface proteins in favour of circumventing a host immune response.
What are antigens with only one antigenic site called?
Antigens with only one antigenic site are called Major histocompatibility complex (MHC)
What the name of a diamond in geometry?
the technical is a antigenic, frogulation.
