Question

What does a DNA library consist of?

A. A collection of cloned DNA fragments in a bacterial culture
B. A database of gene sequences from an organism's genome
C. A collection of Vector DNA, cleaved by a restriction nuclease
D. A catalog of commercially available DNA probes

Answer 1

A DNA library consists of a collection of cloned DNA fragments in a bacterial culture. It allows researchers to study and analyze the DNA sequences and functions of different genes present in the library. DNA libraries are essential tools for genetic research.

Step-by-step explanation:

A DNA library consists of a collection of cloned DNA fragments in a bacterial culture. The library is created by inserting these DNA fragments into plasmid vectors or bacteriophage. This allows researchers to study and analyze the DNA sequences and functions of different genes present in the library.

For example, a genomic library contains fragments of an organism's entire genome, while a cDNA library contains fragments of mRNA molecules expressed in a specific cell at a given point in time.

DNA libraries are essential tools for researchers to study genetic information and discover genes of interest from different organisms.