Author: Anonymous

What is the source of the extra chromosome 21 in an individual with Down syndrome?

Use the following map of four genes on a chromosome to answer the question. Between which two genes would you expect the highest frequency of recombination? 

Which of the following occurrences describes how recombination between linked genes comes about?

What is an allele? 

Sometimes when I have my morning coffee, which I drink black with no cream or sugar, I notice a thin film floating on top of the coffee. Since I have learned biology, I now realize the nature of this substance and so I run to my friend screaming, “Look at this ________ in my coffee!”

The process by which white blood cells engulf bacteria is known as: 

Which enzyme catalyzes the elongation of a new DNA strand in the 5′ → 3′ direction?

Which of the following is the most common pathway taken by a newly synthesized protein that will be secreted by a cell? 

(Ignore income taxes in this problem.) The management of Plotnik Corporation is investigating purchasing equipment that would increase sales revenues by $269,000 per year and cash operating expenses by $156,000 per year. The equipment would cost $294,000 and have a 6 year life with no salvage value. The simple rate of return (accounting rate of return) on the investment is closest to:

Producing 10,000 units of a cell phone requires $300,000 of prime costs, uses 2,000 machine hours, and takes 1,200 setup hours. The activity rates are $40 per machine hour and $100 per setup hour. What is the unit cost of a cell phone?