A change in the genetic makeup of a species over time is called
A) adaptation. B) mutation. C) evolution. D) natural causality.
C
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Describe the usefulness of blue-white screening, also called ?-complementation, in cloning vectors such as pUC19. Include in your answer the terms polylinker, DNA ligase, lacZ gene, insertional inactivation, Xgal, and ?-galactosidase
What will be an ideal response?
Which of the following is/are true about monoclonal antibodies?
A. They recognize a specific epitope B. They are a useful tool in disease diagnosis C. They are made by hybridizing a myeloma cell and an activated B cell D. All of the choices are correct.
What is the primary function of the hormone ADH?
A. regulates biological rhythms B. mediates adaptation to long term stress C. stimulates bone breakdown D. conserves water by stimulating its reabsorption from urine E. inhibits loss of calcium from bone
Memory cells may inhibit the immune response after an antigen has been neutralized.
a. true b. false