Which of the following is a gene library?
A)a collection of DNAs cut by a restriction enzyme
B)a collection of plasmids cut by a restriction enzyme
C)a collection of different DNA fragments ligated into plasmids
D)a collection of genes that have been sequenced from a particular organism
E)a collection of PCR-amplified DNAs

Question

Quizplus · Accepted Answer

A gene library is a collection of different DNA fragments that have been ligated into plasmids, hence option C is the best choice. Option A is incorrect because it only contains DNAs cut by a restriction enzyme. Option B is incorrect because it only contains plasmids cut by a restriction enzyme. Option D is incorrect as it only contains genes that have been sequenced but not necessarily cloned into plasmids. Option E is incorrect since PCR amplification does not involve cloning the fragments into plasmids.

Which of the Following Is a Gene Library