Exam 19: Microbial Taxonomy and the Evolution of Diversity

Chromosomal gene exchange is not useful in classification studies because prokaryotes do not reproduce sexually.

The general order of classification below the domain or kingdom level is

The organisms in which of the following are more closely related?

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 _________ ________.

A population descending from a single organism or pure culture isolate is called a ______.

The G + C content of a DNA sample can be estimated from its T_M of a DNA.

Place the five steps in building a phylogenetic tree in the proper order,from first construction step to last. The nucleotide or amino acid sequence must be aligned. Application of a selected method,using computer analysis. The alignment must be examined for a phylogenetic signal. Manual examination of the tree. Choose which tree-building method to use (common ones are phenetic or cladistic).

The arrangement of organisms into groups is best described as ______.

Which of the following has not been considered as a "gold standard" taxonomic method applied to species designation.

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

The second edition of Bergey's Manual classifies bacteria ______.

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

The ______ hypothesis proposes that mitochondria and chloroplasts developed from free-living prokaryotes that invaded a precursor to the eukaryotes and established a stable relationship. or

An unrooted tree containing four unrelated species can become rooted by adding

The analysis of genetic relatedness by observing the DNA fragmentation patterns resulting from restriction endonuclease cleavage is referred to as ______.

Fatty acid methyl ester (FAME)analysis is particularly important in public health because in this application,microbiologists seek to identify specific microbial pathogens in ______.

The assignment of names to taxonomic groups is referred to as ______.