You are interested in determining which genes are being expressed at a particular apical meristem of a plant at a particular time.For this, you will most likely use
A) a cDNA library.
B) a genomic library.
C) a selectable marker.
D) antisense RNA.
E) interference RNA.

Question

Quizplus · Accepted Answer

To determine which genes are being expressed at a particular time, a cDNA library is the best choice. This is because cDNA libraries only contain genes that are actively transcribed and therefore expressed in the cell or tissue of interest. In contrast, genomic libraries contain all of the genes present in an organism's genome, including those that may not be expressed at the specific time or in the specific tissue being studied. Selectable markers, antisense RNA, and interference RNA are not appropriate methods for identifying expressed genes.

You Are Interested in Determining Which Genes Are Being Expressed