(NO LINKS)Read the passage from "Cool Jobs Part 1."
Extracting DNA from the sample is cheaper and easier than trying to identify microbes visually under a microscope, Gilbert explains. "Microbes are very, very, very small," he says. "Species of bacteria that are as different as an antelope from an octopus can look identical under a microscope." But their DNA, he notes, tells the story of who they are and what they do.
What does the analogy "Species of bacteria that are as different as an antelope from an octopus can look identical under a microscope" mean in this passage?
A)Some species of bacteria are as complex as some animal species.
B)Many types of bacteria, even though unique, share characteristics of other species.
C)Some species of bacteria are as big as some animal species.
D)Many types of bacteria function differently but look the same.