In Vertebrates,the Family of Myogenic Regulatory Factors (MRFs)plays a Major

question 12

Multiple Choice

In vertebrates,the family of myogenic regulatory factors (MRFs) plays a major role in muscle development.This family consists of four related genes which have distinct but overlapping functions.This gene family is represented by only a single gene in Drosophila,called nautilus.You want to know whether nautilus plays a role like all of the MRFs put together,or more like one in particular.What is a quick and easy way to begin to address this question?

• A)Compare the DNA and protein sequences of all the genes to determine if nautilus is more similar to one MRF than another.
• B)Use a DNA microarray to compare gene activation patterns between nautilus and the MRFs.
• C)Compare the proteome of a cell expressing nautilus to the those of cells expressing each of the MRFs in turn.
• D)Generate four transgenic Drosophila strains that express the MRFs in a mutant nautilus background.

---

Definitions:

Issued at a Discount

When bonds or other securities are sold for less than their face value upon issuance.

Issued at a Premium

Refers to the situation where securities, such as bonds, are sold for a price above their face value.

Discount on Bonds Payable

The difference between the face value of a bond and its selling price when the bond is sold for less than its face value.

Face Value

The nominal or dollar value printed on a financial instrument, such as a bond or stock certificate, representing its value at issuance.