The Major Histocompatibility Complex (MHC) is a set of proteins expressed on the surface of antigen presenting cells that recogn
ize and bind to pieces of antigens so that they can be presented to the appropriate T cell. Not only is the expression of these proteins controlled by more than one gene (polygenic), but individuals with different alleles for MHC proteins are heterozygous for that gene. What advantage does the MHC proteins being polygenic and codominant offer to the individual? A) There will be a lower level of immune rejection for this individual should they receive a blood or organ transplant. B) There will be an increased resistance to HIV infection, as the T cells will be less likely to be invaded by the virus. C) There is a larger variety of MHC proteins that can be expressed on the cell surfaces of their immune cells, providing a wider opportunity to recognize and attack pathogens. Eliminate D) There is an increased opportunity for anaphylaxis, as presenting a wider variety of MHC proteins on the cell surfaces of immune cells will result in a body-wide response to antigens.
The correct answer is C) There is a larger variety of MHC proteins that can be expressed on the cell surfaces of their immune cells, providing a wider opportunity to recognize and attack pathogens.
Small fragments of orbiting bodies that have landed on Earth are known as meteorites. If the fragments are still orbiting earth are known as meteoroids. They are not called meteorites until they enter Earth's atmosphere. Once a meteor enters Earth's atmosphere it will begin to burn up. It may burn up completely or lose most of its size by the time is lands on Earth's surface.
Organism with AABBCCDD genotype will produce only one type of gamete, ABCD and the organism having the genotype AaBbCcDd will produce 16 types of gametes.
Virus are considered to be non living No antibiotics won’t be helpful towards influenza virus it can inturn result to antibiotic resistance Flu is viral
If both species want to persist in the same environment and their niches are also over lapping then both of the co-efficient values should be equal. There are two possibilities on these values for persistence. One is that one should compromise to the change produced by the invasive specie and two is that the new specie should compromise if he wants to stay (<em><u>Assuming that there is no competition</u></em>). In this way their niches won't overlap to a greater extent and therefore better chances of survival for both.
