Chromosomal Islands Contain Clusters of Genes For

Question

Chromosomal islands contain clusters of genes for
A) DNA repair and replication.
B) virulence, biodegradation of pollutants, and symbiotic relationships.
C) catabolic and anabolic reactions.
D) antibiotic resistance.

Accepted Answer

Chromosomal islands are defined as clusters of genes that have been acquired by horizontal gene transfer and integrated into the chromosome of the recipient organism. These islands can provide new functions for the host, such as virulence, biodegradation of pollutants, and symbiotic relationships. Therefore, choice B is the best option as it describes the typical functions of chromosomal islands. While some chromosomal islands may contain genes for DNA repair and replication or antibiotic resistance, these functions are less characteristic of chromosomal islands in general.