A security is currently selling for $10,000 and promises to pay $1,500 annually for the next 10 years, and $1,000 annually in the 2 years thereafter with all payments occurring at the end of each year. If your required rate of return is 7%, should you buy this security?

You plan to retire in exactly 20 years. Your goal is to create a fund that will allow you to receive $25,000 at the end of each year for 30 years after you retire. (So you will receive your first payment in 21 years). You know that you will earn 10% (compounded annually) for the rest of your life. You want to make 20 end-of year deposits into your retirement account that will fund the 30-year stream of $25,000 annual annuity payments. How large do your annual deposits have to be?

Starting to invest later for retirement increases the benefits of compound interest.

What’s the present value of a perpetuity that pays $600 per year if the appropriate interest rate is 10%?

Which of the following methodologies requires a double stranded PCR product to be denatured and renatured with or without added normal product?

Examination of chromosomes in karyotypes is performed on chromosomes in what stage of mitosis?

What is a heteroduplex?

A medical laboratory scientist performs fluorescence in situ hybridization (FISH) on interphase chromosomes using a probe to chromosome 21. In all cells examined, two signals were seen. These results are interpreted as:

A melt curve analysis was performed to genotype hepatitis C virus (HCV), which has been identified in a patient. When the derivative of fluorescence was plotted versus the temperature for the patient’s isolate as well as for a known genotype of HCV, the two sequences had identical peaks and thus the same Tm. Which of the following is the correct interpretation of these results?

During interphase FISH analysis of a normal specimen for the t(9;22) translocation, one nucleus was observed with two normal signals (one red for chromosome 22 and one green for chromosome 9) and one composite red/green signal. Five hundred other nuclei were normal. What is one explanation for this observation?