Flashcards in Chapter 14 Deck (30):
In classification the taxonomic category above family
The formation of a new species as a result of an ancestral population becoming isolated by a geographic barrier.
adaptive change resulting in nonhomologous (analogous) similarities among organisms. Species from different evolutionary lineages come to resemble each other as a result of living in very similar environments
a taxonomic category above the kingdom level. The three domains of life are Archaea, Bacteria and Eukarya
evolutionary developmental biology, which studies the evolution of developmental processes in multicellular organisms
in classification, the taxonomic category above genus
in classification, the taxonomic category above species, the first part of a species binomial. For example: Homo
geologic time scale
a time scale established by geologists that reflects a consistent sequence of geologic periods, grouped into four divisions: Precambrian, Paleozoic, Mesozoic, and Cenozoic
in classification, the broad taxonomic category above phylum
evolutionary change on a grand scale, encompassing the origin of new species, the origin of new species, the origin of evolutionary novelty, diversification, and mass extinction
The similarity of structure between two species that are not closely related, attributed to convergent evolution.
A two-part latinized name of a species.
Biological Species Concept
The definition of a species as a population or group of populations whose members have the potential in nature to interbreed and produce fertile offspring.
An ancestral species and all its descendants-a distinctive branch in the tree of life.
The study of evolutionary history; specifically, the scientific search for clades, taxonomic groups composed of an ancestral species and all its descendants.
In classification, the taxonomic category above order.
Anything that prevents individuals of closely related species from interbreeding, even when populations of the two species live together.
The formation of new species.
a group of populations whose members possess similar anatomical characteristics and have the ability to interbreed
the formation of a new species as a result of a change that produces a reproductive barrier between the changed populations. Sympatric speciation occurs without a geographic barrier
The retention in adult features that were juvenile in ancestral species.
In classification, the taxonomic category above the class and below the kingdom. Members of a phylum have a similar general body plan.
A branching diagram that represents a hypothesis about evolutionary relationships between organisms.
Post zygotic Barrier
A reproductive barrier that operates if interspecies mating occurs and forms hybrid zygotes.
Pre zygotic Barrier
A reproductive barrier that impedes mating between species or hinders fertilization of eggs if members of a different species attempt to mate
The term describing long periods of little change, or equilibrium punctuated by abrupt species of speciation
a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.
the branch of biology that deals with classification and nomenclature; taxonomy.
the branch of biology concerned with classification, especially of organisms; systematics.