Exam 17: Microbial Taxonomy and the Evolution of Diversity

Mole percent (G+C) of DNA is useful for determining relatedness at the __________ level.

The assignment of names to taxonomic groups is referred to as

Microbial species are collections of strains that share many stable properties in common but differ significantly from other strains.

The pace of evolution does not always occur at a constant rate but is periodically interrupted by rapid bursts of speciation; this is known as _________ ________.

Extensive horizontal gene transfer between domains greatly simplifies the construction of phylogenetic trees.

The arrangement of organisms into groups is best described as

Although there are other classification schemes for prokaryotes, the one used in Bergey's Manual is currently considered by most microbiologists to be the most .

Numerical taxonomy was made practical with the advent of

A theoretical concept that is used to understand how and why certain organisms can be sorted into discrete taxonomic groups is known as the

rRNA signature sequences can be used to place microorganisms in the correct domain.

In an approach called __________ taxonomy, relatedness is determined by a wide range of phenotypic and genotypic information.

The type strain is a well-characterized strain to which other strains are compared for inclusion in or exclusion from a particular species.

Which of the following is an example of the use of the binomial system devised by Linnaeus?

According to genome analysis, a member of the genus ______________is most closely related to the mitochondrion.

Conserved indels are

Stable annealing due to hydrogen bonding between DNAs of similar nucleotide sequence from different organisms is referred to as

The temperature at which half of the strands of a double-stranded DNA molecule have separated from each other is called the __________ temperature.

Serovars are strains of a species that have distinctive antigenic properties.

The determination of the taxon to which an organism belongs is called

Conjugation is useful for determining relatedness between bacteria at the species level because it never occurs between organisms of different genera.