Chapter 20 Phylogeny Crossword

Discipline focused on classifying organisms and determining their evolutionary relationships
Evolutionary novelty that is unique to a particular clade
Branching diagram that represents a hypothesis about the evolutionary history of a group of organisms
Branch point from which more than two descendant groups emerge
Evolutionary history of a species or group of species
Group of taxa derived from two or more different ancestors
Means that a branch point within the tree represents the most recent common ancestor of all taxa
Lineage that diverges early in the history of a group and lies near the common ancestor
Group of species that includes ancestral species and all of its descendants
Equivalent to a clade
Process in which genes are transferred from one genome to another through mechanisms such as exchange of transposable elements and plasmids, viral infections, and fusions of organisms
Representation on a phylogenetic tree of the divergence of two or more taxa from a common ancestor
Character shared by members of a particular clade but originated in an ancestor that is not a part of the clade
Approach to systematics in which organisms are placed into groups based on common descent
An approach for measuring the absolute time of evolutionary change based on the observation that some genes and other regions of genomes appear to evolve at constant rates
Scientific discipline concerned with naming and classifying the diverse forms of life
Designated by the first word of a species' two-part scientific name
Principle that states that when considering multiple explanations for an observation, one should first investigate the simplest explanation that is consistent with the facts
Groups of organisms that share an immediate common ancestor
Group of taxa that consists of a common ancestor and some of its descendants