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What must a interfering RNA possess to interfere with the translation (gene expression) of an mRNA?

Solve.The function A = A0e-0.01155x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 700 pounds of the material are initially put into the vault, how many pounds will be left after 170 years?

What makes DNA separate by size when run on an electrophoresis gel?  Where will large or small DNA pieces end up?

Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.8ex = 13

Use the pull-down menus to insert the best terms that make these sentences true: In any experiment, the variable that the scientist measures is called the [blank1] and it is plotted on [blank2] of a graph.  By contrast, the variable that the scientist manipulates or varies in the experiment is called the [blank3] and it is plotted on [blank4] of a graph.

A region within the promoter of both prokaryotic and eukaryotic genes has the sequence TATAAT and is called the TATA box.  What would be the consequence to a gene if a mutation changed the sequence to GATACT?

Most dominantly-inherited disease genes have been lost from the gene pool over time.  Read the following information about Huntington’s disease.  Why would a disease gene like HTT, which causes Huntington’s disease, not be subject to the same kind of evolutionary pressure that you would expect for a dominantly-inherited disorder? From Online Mendelian Inheritance in Man: The classic signs of Huntington disease are progressive chorea (tremors), rigidity, and dementia. Typically, there is a…phase of mild psychotic and behavioral symptoms which precedes frank chorea by up to 10 years. Chandler et al. (1960) observed that the age of onset was between 30 and 40 years. The disease terminated in death on average 17 years after manifestation of the first symptoms.

In the Hershey and Chase experiment, why did the radioactive phosphorous end up in the bacterial cells, but the radioactive sulfur did not?

If you put blood into a test tube containing a 400 mOsM glucose solution, what would you expect to observe with a microscope in terms of the red blood cell appearance/structure? Type the best and most specific technical term into the blank below:

Thomas Hunt Morgan disproved Mendel’s Law of Independent Assortment when he showed that genes inherited together on the same chromosome do not assort independently.  Under what circumstance are two genes on the same chromosome more likely to be inherited together and not be separated by crossing over (genetic recombination)?