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Chapter 16
Microbial Evolution and Systematics
18
Microbiology
Undergraduate 2
03/29/2012

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Term
Allele
Definition
a sequence varient of a given gene
Term
Archaea
Definition
phylogeneticaly related prokaryotes distinct from bacteria
Term
Bacteria
Definition
phylogenetically related prokaryotes distinct from archaea
Term
Cladistics
Definition
phylogenetic methods that group organisms by their evolutionary relationships, not by their phenotypic similarities
Term
Domain
Definition
in a taxonomic sense, the highest level of biological classification
Term
DNA-DNA Hybridization
Definition
genome-wide comparison of sequence similarity by measuring the extent of hybridization of DNA from one organism to another.
Term
Ecotype
Definition
a population of genetically identical cells sharing a particular resource within an ecological niche
Term
FAME
Definition
fatty acid methyl ester; a technique for identifying microorganisms from their fatty acids
Term
FISH
Definition
flourescent in situ hybridization; a staining technique for phylogenetic studies
Term
GC Ratio
Definition
% of guanine and cytosine base pairs in a genome
Term
Horizontal Gene Transfer
Definition
the transfer of DNA from one cell to another cell
Term
Molecular Clock
Definition
a DNA sequence that can be used as a comparative temporal measure of evolutionary divergence
Term
Monophyletic
Definition
in a phylogeny, a group descended from one ancestor
Term
Multilocus Sequence Typing
Definition
strain typing using housekeeping DNA sequences of multiple genes
Term
Phylogenetic Probe
Definition
an oligonucleotide, sometimes made fluorescent by attachment of a dye, complementary in sequence to some sequence in rRNA
Term
Phylogeny
Definition
the evolutionary history of an organism
Term
Ribotyping
Definition
a means of identifying microorganisms from analysis of DNA fragments generated from restriction enzyme digestion of the genes encoding 16S rRNA
Term
Systematics
Definition
the study of the diversity of organisms and their relationships; includes taxonomy and phylogeny
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