Directional selection is best described as
a. all polymorphic alleles preserved in a population
b. T-cell receptor interaction with peptide:MHC complexes directed to a planar interface
c. a mechanism in T cells that is analogous to affinity maturation of immunoglobulins
d. selected alleles increase in frequency in a population
e. selection of most appropriate transplant donor directed at the identification of identical or similar combinations of HLA alleles compared with the transplant recipient.
D
You might also like to view...
Chemoinformatics refers to ________.
a. using the chemical name and mathematics to identify drugs and which patients will respond to them. b. using chemistry and statistics to define a particular substance. c. applying computer technology, statistics, and mathematics to study the structure, properties, and activities of molecules. d. All of the above.
The term duodenal refers to what part of the intestine?
A) first part of small intestine B) second part of small intestine C) third part of small intestine D) large intestine
The spinal cavity is anterior to the thoracic cavity.
Answer the following statement true (T) or false (F)
The highest amounts of cholesterol are found in organ meats
Indicate whether the statement is true or false