You have made a specific DNA probe that will bind to a key sequence on the DNA of Neisseria gonorrhoeae, allowing your company to market a gonorrhea test kit that can be used to identify the bacterium in genital tract specimens. However, upon testing it out against a known Neisseria gonorrhoeae culture, you find that it does not work. Which of the following is a possible explanation for this negative result?
A. You forgot to incubate the test at the 75°C temperature required for hybridization.
B. You forgot to add the mRNA to the DNA probe sample.
C. You forgot to label the probe sequence with a reporter molecule.
D. You forgot to digest the probe with restriction endonucleases.
Answer: C
You might also like to view...
In the late 1960's, Robert Paine conducted landmark studies on diversity in the rocky intertidal zone comparing the species diversity in control plots with diversity in experimental plots from which he removed the top predator, sea stars
After 5 years, 15 species of intertidal invertebrates lived in the control plots, while the experimental plots were dominated by only two species, one mussel and one barnacle. Why did species diversity most likely remain high in the presence of a predator? A. The sea star kept the mussel and barnacle populations low enough to prevent competitive exclusion from occurring. B. The sea star kept the mussel and barnacles from developing a mutualistic relationship. That, in turn, kept their populations low. C. The mussel and the barnacle parasitized the sea star, keeping populations low enough to prevent competitive exclusion from occurring. D. The sea star developed a mutalistic relationship with the mussel and barnacle, keeping their populations low and preventing competitive exclusion from happening.
What are 3 human activities that negatively affect sea turtle survival?
What will be an ideal response?
With ____ selection(s), the intermediate form
of a trait is favored.
a. stabilizing b. directional c. disruptive d. frequent e. none of these
The hormones FSH and LH are produced by the ________
Fill in the blank(s) with correct word