evolutiontransformation of an
organism such that descendants differ from their predecessors
Source: Jenkins, John B. 1990.
Human Genetics, 2nd Edition. New York: Harper & Row ...
Full article >>>Evolution is a Fact and a
Theory[Last Update: January 22, 1993]
hen non-
biologists talk about biological
evolution they often confuse two different aspects of the definition.
Full article >>>Evolutionary
developmental biology (often referred to as 'evo-devo' or
evolution of development) is a field of
biology that compares the developmental processes of different
animals in an attempt to determine the ancestral relationship between ...
Full article >>>Evolution of a Vision:
Genome Project Origins, Present and Future Challenges,
Far-Reaching Benefits ...
Full article >>>Evolution and
AdaptationIndex to this page
Natural Selection The Measure of "
Fitness" ...
Full article >>>Evolution occurs whenever a new
species of bacterium evolves that is resistant to
antibiotics which had been lethal to prior
strains.
Full article >>>Evolution, which started out as a
hypothesis, is now supported by evidence from many fields of science.
Fossils: Evidence of Past Life ...
Full article >>>Australian Museum
Evolutionary Biology Unit
Glossary of Terms
See the Glossary of Phylogenetic Systematics for a more complete listing and in depth discussion of terms ...
Full article >>>Evolutionary biology is something of a meta field because it includes scientists from many traditional
taxonomically-oriented disciplines.
Full article >>>Evolutionary dead ends are very common in the
human fossil record. In fact, there are people who would claim that we probably don't know any direct ancestors to Homo sapiens in that record.
Full article >>>Evolution: The process that results in heritable changes in a
population spread over many generations (change in
allele frequencies over time).
Full article >>>A measurement of
evolutionary time in
nucleotide substitutions per year.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Full article >>>Chapter 9
Protease inhibitors and directed
evolution: enhancing
plant resistance to nematodes
Michael J.McPherson1 and David J.Harrison ...
Full article >>>Evolution: the central principle of
biologyMain article:
EvolutionOne of the central,
organizing concepts in
biology is that all life has descended from a common
origin through a process of
evolution.
Full article >>>Evolutionary terminology
Adaptation: a condition or
character which afford
fitness to a
species in a particular
environment.
Adaptive radiation:
evolutionary divergence of members of a single phyletic line into many different
niches.
Full article >>>Evolutionary change on a grand
scale, encompassing the
origin of novel designs,
evolutionary trends,
adaptive radiation, and mass
extinction.
macro
molecule[Gk. makros, large + L. dim. of moles, mass] ...
Full article >>>Evolutionary diversification of a generalized ancestral form with production of a number of specialized forms by
adaptation. See
cladogenesis.
Related Terms:
Evolution ...
Full article >>>Evolution and
Population Genetics (for on campus)
Evolution and
Population Genetics (online lab version)
Exploring the Size of
Organisms
History of Life
Prokaryotes ...
Full article >>>evolutionary tree -- A diagram which depicts the hypothetical
phylogeny of the taxa under consideration. The points at which
lineages split represent ancestor taxa to the descendant taxa appearing at the terminal points of the cladogram.
Full article >>>evolution: changes that occur within
populations and
organisms that make individuals able to adapt to their external
environment.
exergonic reaction: a chemical re
action in which energy is released.
Full article >>>EVOLUTIONARY CLOCK - Defined by the rate at which
mutations accumulate within a given
gene.
EXON The portion of a
gene that is actually
translated into
protein (see
INTRON,
SPLICING).
Full article >>>Evolution. The
long-term process through which a
population of
organisms accumulats genetic changes that enable its members to successfully adapt to
environmental conditions and to better exploit food resources.
Full article >>>Evolutionary
Footprinting: One can infer which portions of a
gene are important by comparing the
sequence of that
gene with its cognates from other
species.
Full article >>>Evolution changes over time in the percentages or frequencies of the various
alleles of the genes in a
population (evolut = an unrolling) ...
Full article >>>evolution Change over time.
Organic or biological
evolution is a series of changes in the genetic composition of a
population over time. See also
natural selection and
punctuated equilibrium model.
Full article >>>Evolutionary Clock: Defined by the rate at which
mutations accumulate within a given
gene.
Evolutionarily conserved: See
conserved sequence.
Exogenous DNA:
DNA originating outside an
organism.
Full article >>>In the
evolutionary
sense, some heritable feature of an individual's
phenotype that improves its chances of
survival and
reproduction in the existing
environment.
Full article >>>Directed
evolutionThis term is used in two ways. (i) A laboratory process using mechanisms of
natural selection to produce mutants adaptated to defined
environmental challenges.
Full article >>>Evidence of
EvolutionUse comparative
embryology,
molecular biology,
anatomy, and
fossil record to show probably
evolutionary relationships.
- ...
Full article >>>deuterostomeAn
evolutionary line of
coelomates (ex. echinoderms and
chordates) that are
characterized by radial, indeterminate
cleavage and development of the
anus from the
blastopore.
Covered in Lab 13
Animal Diversity III ...
Full article >>>The
evolution of new
species or sub-
species to fill unoccupied ecological
niches.
Aerobe. A microorganism that grows in the presence of
oxygen. See
Anaerobe.
Agarose gel electrophoresis.
Full article >>>The
theory that
introns serve an
evolutionary function in allowing the shuffling of
exons is still being debated.
Full article >>>A tree-like diagram showing
evolutionary relationships. Any two branch tips sharing the same immediate node are most closely related.
Full article >>>Genus, Genera (pl.): A group of
evolutionarily related
species, sharing one or a number of
characteristics.
Full article >>>analogous structures - structures having similar function or
superficial appearance, but not necessarily sharing a common
evolutionary
origin (contrast with homologous structures).
Full article >>>Scientists regard these cross
species similarities as evidence that a specific
gene performs some basic function essential to many forms of life and that
evolution has therefore conserved its structure by permitting few
mutations to accumulate in it.
Full article >>>'"/>