Select the organism that could be present as normal flora in some populations, which would lead to caution when interpreting a positive PCR result:

What happens after many cycles of PCR?

The Van-A Gene confers bacterial resistance to vancomycin & teicoplanin, while the Van-B Gene confers resistance to vancomycin, but M. tuberculosis remains susceptible to teicoplanin.

Which statement is NOT TRUE about Varicella-Zoster virus (VZV)?

 Nonbenign polymorphisms are mutations useful for mapping and determining parentage.

Which statment best describes the difference between a polymorphic allele and a mutant allele?

According to the STR banding pattern in the following gel, is it possible that this male  be the biological father of this child? Select the statment which best interprets these results: STR gel paternity.gif 

Using the scatterplot, determine a likely temperature at noon on a day when sales were $750.  Explain your reasoning using complete sentences.

A bank has a vault that tracks the approximate value in the vault by weight.  This bank reported a robbery of 200 pounds of bills.  Half of the bills were $50 and the other half were all $20.  How much was stolen from the bank? Explain your answer using complete sentences.

Using the scatterplot, estimate the amount of sales when the temperature is 21 degrees Celsius.  Explain your reasoning using complete sentences.