Compare and contrast Southern, northern, and western blotting
What will be an ideal response?
Ans: All three techniques are used to transfer molecules that have been separated by gel electrophoresis from the gel to a membrane for further analysis (such as hybridization of a probe to detect a specific DNA sequence). Southern blotting transfers DNA, northern blotting transfers RNA, and western blotting transfers proteins.
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An electron microscope uses ________ lenses to focus beams of electrons onto a specimen.
Fill in the blank(s) with the appropriate word(s).
Identical (monozygotic) and fraternal (dizygotic) twins provide a natural experiment for investigating the influence of genetics on traits
Outline a study approach using twins, assuming you could identify enough pairs, in which you are examining the relative contribution of genetics on blood cholesterol level.
Steve decides to make a meal for some of his friends. He uses a variety of foods to prepare the meal, including some canned mushrooms. Unfortunately, he gives his friends a mild case of botulism food poisoning
His friends report blurred vision and trouble speaking due to a flaccid paralysis of the muscle cells by the botulinum toxin. Propose a mechanism by which this toxin would inhibit muscle contraction.
Extracts from the ginkgo tree are sold in over the counter (OTC) medicines purported to increase memory. Extracts
from what other gymnosperm were once sold in OTC weight loss supplements? a. Ephedra b. Eucalyptus c. Welwitschia d. Archaeopteris e. Sequoiadendron