the science of classification according to the inferred (presumed) relationships among organisms.
a method of naming organisms by using two names - the genus name and the species name. Scientific names are italicized.
the first part of a binomial name; a genus name includes several species.
a group of organisms that look alike and can interbreed under natural conditions to produce fertile offspring.
Taxon (p) taxa
categories used to classify organisms.
a kingdom originally proposed for unicellular organisms such as the amoeba. More recently, multicellular algae have been added to the kingdom. No cell wall.
in a five-kingdom system, a kingdom that includes organisms that lack a true nucleus.
in a six-kingdom system, a kingdom consisting of prokaryotic microorganisms distinct from eubacteria that possess a cell wall not containing peptidoglycan and that live in harsh environments such as salt lakes and thermal vents.
in a six-kindgom system, a kingdom consisting of prokaryotic microorganisms that possess a peptidoglycan cell wall. Prokaryotic (lacking nucleus)
the history of evolution of a species or a group of organisms.
a two-part key used to identify living things.
the study of fossils.
a technique used to determine the age of a rock or fossil.
the study of the geographic distribution of life on earth.
a term used to describe a species that is found in only one location only.
features with similar structures but different functions.
features that are similar in appearance and function, but do not appear to have the same evolutionary origin.
rudimentary structures with no useful function.
the molecule that makes up genetic material.
a segment of DNA that performs a specific function, such as coding for a particular protein.
the process of humans selecting and breeding individuals with desired traits.
the belief that living things arose from non-living matter.
the result of differential reproductive success of individuals caused by variations in their inherited characteristics.
Inheritance of acquired characteristics
the false concept of inheritance of features acquired during the life of an individual.
a change in DNA sequence in a chromosome.
a mutation that has no effect on the organism.
an organism's reproductive success.
a mutation that reduces an organism's fitness.
a mutation that enhances an organism's fitness.
the production of offspring from a single parent; offspring inherit the genes of that parent only.
offspring from the same parent (in asexual reproduction) or parents (in sexual reproduction).
the production of offspring by the union of sex cells from two different parents; the offspring inherit a combination of genes from both parents.
all the genes in a certain population.
the formation of a new species.
speciation by reproductive isolation.
Theory of gradualism
the idea that speciation takes place slowly.
Theory of punctuated equilibrium
the idea that species evolve rapidly.
evolution into many different species.
similiarity in DNA molecules and specific proteins.
Multicellular; cell wall; terrestrial; heterotrophs; mushrooms
multicellular; cell wall; autotrophs; mosses, ferns, conifers
multicellular; no cell wall; heterotrophs; sexual reproduction; mammals, lobsters, starfish.