What does cloning of cDNAs allow?
A)the determination of all genes present in a cell
B)the identification of sequences active at a given time in a particular cell type
C)the identification of genes active throughout an organism's body
D)the sequence of all genes present in a given cell
E)the sequences of all cellular introns

Question

Quizplus · Accepted Answer

Cloning of cDNAs (complementary DNAs) allows the identification of sequences active at a given time in a particular cell type. This is because cDNAs are generated from mRNA transcripts, which are only present in cells where the corresponding gene is being actively transcribed. Therefore, cloning cDNAs can be used to identify the genes that are active in a particular cell type at a particular time. It does not allow for the determination of all genes present in a cell (A), the identification of genes active throughout an organism's body (C), the sequence of all genes present in a given cell (D), or the sequences of all cellular introns (E).

What Does Cloning of CDNAs Allow