Complementary nucleic acid hybridization, which is coupled with nucleic acid replication and applied repeatedly through numerous cycles, is based on which of the following methods?
a. Hybridization
b. Sequencing
c. Amplification (PCR)
d. Genotypic
C
In PCR-based methods, the target nucleic acid is amplified by nucleic acid replication; these methods are repeatedly applied through numerous cycles.
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Oxygen produced by photosynthesis comes directly from:a
light. b. CO2. c. glucose. d. H2O. e. ATP.
Bacteria protect themselves from bacteriophage infections by producing restriction enzymes that cut up foreign RNA
of the phage. ____________________ Indicate whether the statement is true or false.
Matings between individuals from the two populations of Rhagoletis produce hybrid flies that appear to be healthy and have normal life spans. The eggs laid by these hybrid flies, however, hatch less often than those of flies from either of the two populations. What isolating mechanism seems to be important in this hybrid population?
A) Prezygotic isolation B) Mechanical isolation C) Reduced hybrid fertility D) Habitat isolation
Which of the following is TRUE of both T cells and B cells?
A. They have class I MHC molecules on their cell surface. B. They recognize specific antigens on the cell surface. C. They are involved in the humoral immune response. D. They are lymphocytes. E. All of the responses are correct.