Following treatment with restriction enzymes, what procedure would be used to isolate DNA fragments of different lengths?
A. transformation
B. transfection
C. gel electrophoresis
D. colony hybridization
E. Western blotting
C. gel electrophoresis
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The organization phases of development are regulated by
A. transcription factors. B. morphogens. C. segmentation genes. D. morphogens and transcription factors only. E. morphogens, transcription factors, and segmentation genes.
A procedure that divides organisms into two or more groups depending on their individual reactions to the same staining procedure is referred to as ________ staining.
Fill in the blank(s) with the appropriate word(s).
The term “plankton”
a. refers to a taxonomic division of algae. b. is a common term for unicellular organisms that drift or swim weakly in water. c. includes only multicellular forms. d. refers to small aquatic plants. e. would apply to large brown algae.
What cytokine stimulates plasma cells to secrete IgA?
A) interleukin-5 B) interleukin-10 C) interleukin-4 D) interferon-gamma E) interferon-alpha