Researchers Used a Metagenomic Approach to Assess the Presence of Antibiotic

Multiple Choice

Researchers used a metagenomic approach to assess the presence of antibiotic resistance genes in the human microbiome. Which experimental step allowed the researchers to obtain only the gene sequences of interest?

A) Extraction of genomic DNA from fecal samples
B) Cloning fragmented DNA from fecal sample into a host strain
C) Sequencing DNA samples
D) Cultivation of host strain on media containing antibiotics