A) All the bacterial genomes in a niche B) All the genomes of all the individuals of a species C) The genomes of an individual and all their close relatives D) The genomes of all the organisms in an environmental sample
Match the missing words in the following phrase. The majority of species considered in metagenomics are [A], including bacteria, [B], and microscopic [C] organisms. An ecosystem comprising these organisms is called a [D].