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Topics related to "Evolutionarily"

club moss
club moss name generally used for the living species of the class Lycopodiopsida, a primitive subdivision of vascular plants. The Lycopodiopsida were a dominant plant group in the Carboniferous period, when they attained the size of trees, and contributed to the coal deposits then being formed. The... Read more
Protista
Protista or Protoctista , in the five-kingdom system of classification, a kingdom comprising a variety of unicellular and some simple multinuclear and multicellular eukaryotic organisms. Protists, which are eukaryotes , have cells that have a membrane-bound nucleus, DNA that is associated with ... Read more
sturgeon
sturgeon primitive fish of the northern regions of Europe, Asia, and North America. Unlike evolutionarily advanced fishes, it has a fine-grained hide, with very reduced scalation, a mostly cartilaginous skeleton, upturned tail fins, and a mouth set well back on the underside of the head. It also ha... Read more
Deciduous Plants
Deciduous Plants A perennial plant that seasonally loses its leaves (and/or stems) is deciduous. This loss is typically related to water stress; for example, green portions of the plant are shed during the dry season. Dry does not have to mean no (or low) precipitation . It simply means that littl... Read more
Porifera
Porifera [Lat.,=pore bearer], animal phylum consisting of the organisms commonly called sponges . It is the only phylum of the animal subkingdom Parazoa and represents the least evolutionarily advanced group of the animal kingdom. All adult sponges are sessile (nonmotile), and nearly all are marin... Read more

Encyclopedia entries related to "Evolutionarily"

Cycads
Encyclopedia entry from: The Gale Encyclopedia of Science ...called sporophylls. In contrast, the evolutionarily more recent angiosperms (flowering...seeds are borne naked. In the more evolutionarily recent angiosperms (flowering plants...ancient) characteristic. Other evolutionarily ancient plants, such as mosses...
Genetics: Longevity Assurance
Encyclopedia entry from: Encyclopedia of Aging ...whereas public longevity genes are evolutionarily conserved and increase the longevity...essentially random process, longevity is evolutionarily adaptive. This idea was first formulated...longevity assurance mechanisms should be evolutionarily conserved (i.e., public). This...
Attachment Theory
Encyclopedia entry from: International Encyclopedia of the Social Sciences ...attachment theory, the infant-parent attachment is an evolutionarily adaptive relationship whose principal function is the protection...earliest environments of human beings such relationships were evolutionarily advantageous. In addition to his concern with all people...
Guppy
Encyclopedia entry from: The Gale Encyclopedia of Science ...phylum Chordata within the kingdom Animalia. Like many evolutionarily advanced organisms (including birds, reptiles, and mammals...helps control buoyancy. Guppies are also among the most evolutionarily advanced group of bony fish, known as Teleosts. Teleosts...
Pines
Encyclopedia entry from: The Gale Encyclopedia of Science ...whereas sieve tube elements are characteristic of the more evolutionarily advanced flowering plants. The oldest known fossil of the...two subgenera of pines, and botanists believe these are evolutionarily distinct groups. These subgenera are Diploxylon, commonly...
Paleontology
Encyclopedia entry from: The Gale Encyclopedia of Science ...comparing different organisms to see how they are related evolutionarily (cladistics). The fossils that paleontologists study...symmetrical nor differentiated into tissues. Sponges are less evolutionarily advanced than members of the phylum Cnidaria, which includes...
Tree
Encyclopedia entry from: The Gale Encyclopedia of Science ...grouped together in the family Pinaceae, because they are evolutionarily related. In turn, the Pineaceae and about six other families...the conifers, or cone-bearing plants) because they are evolutionarily related. Traditionally, plant taxonomists have relied...
Protista
Book article from: The Columbia Encyclopedia, Sixth Edition ...bacteria and archaea) and places the protists within it. It has been hypothesized that the organelles in protists descend evolutionarily from specialized symbiotic bacteria living within the cells of other bacteria, contributing at least in part to the transition...
Polypodiophyta
Book article from: The Columbia Encyclopedia, Sixth Edition ...structures, are generally found on the back of the leaf, but occasionally occur on special structures, which are probably evolutionarily modified leaves. In the great majority of ferns, the spore cases, or sporangia, are produced in groups, with each group...
Alpha-Male
Encyclopedia entry from: International Encyclopedia of the Social Sciences ...individuals were expected to have priority of access to food, mates, and other resources. However, the existence of mixed evolutionarily stable strategies was interpreted to mean that alternative means might obscure the expected correlation between rank and...

Dictionary entries related to "Evolutionarily"

Authenticity, Africa
Dictionary entry from: New Dictionary of the History of Ideas ...Western civilization in contemporary knowledge production by contending that European civilization, which posits itself as evolutionarily and universally superior and as a global model, is derived from Greek civilization, which in turn "stole," or borrowed...
pentadactyl
Book article from: A Dictionary of Zoology pentadactyl Applied to a limb possessing five digits, or to one modified evolutionarily from an ancestral form which possessed five digits. The pentadactyl limb is characteristic of all living and almost all fossil tetrapods. See also APPENDICULAR SKELETON .
bacteria
Book article from: A Dictionary of Biology ...differences in ribosomal RNA structure and nucleotide sequences (see molecular systematics ), that prokaryotes form two evolutionarily distinct groups. Traditionally these were placed in a single kingdom, variously named Bacteria or Prokaryotae, which...
apomorph
Book article from: A Dictionary of Ecology apomorph(adj. apomorphic ) An evolutionarily advanced (‘derived’) character state (the opposite of plesiomorph) that is possessed by a group of biological...
divergence
Book article from: A Dictionary of Earth Sciences ...centre or line. A particular example of divergence in the oceans is seen in areas of upwelling . Compare CONVERGENCE . 3. Evolutionarily, genetic segregation and differentiation within a taxon to the extent that distinct derivative taxa result. The divergence...
apomorphic
Book article from: A Dictionary of Zoology apomorphic Applied to an evolutionarily advanced character state. The long neck of the giraffe is apomorphic; the short neck of its ancestor is plesiomorphic . Apomorphic...
agouti
Book article from: A Dictionary of Ecology ...each hair consists of alternate eumelanic and phaeomelanic bands. According to the theory of metachromism , agouti is the evolutionarily primitive mammalian hair colour. The pattern is named after the agouti (Dasyprocta aguti), a South American rodent with...
synapomorphy
Book article from: A Dictionary of Earth Sciences ...derived). If the two groups share a character state that is not the primitive one, it is plausible that they are related evolutionarily, and only synapomorphic character states can be used as evidence that taxa are related. Phylogenetic trees are built by...
Emotions
Dictionary entry from: New Dictionary of the History of Ideas ...hypothesize that emotions, or at least the "basic" emotions, are "affect programs," essentially hard-wired and evolutionarily derived complexes of neurological, hormonal, and muscular responses, with accompanying feelings, of course. But such...
Tayassuidae
Book article from: A Dictionary of Zoology ...Tayassuidae ( peccaries ; order Artiodactyla , suborder Suiformes ) A family of omnivorous animals which are related to pigs but evolutionarily distinct from them for much of the Tertiary . The oldest fossil peccary comes from the Oligocene of N. America. The upper...

Related newspaper, magazine, and trade journal articles from HighBeam Research

Evolutionarily Stable Infection by a Male-Killing Endosymbiont in Drosophila innubila: Molecular Evidence From the Host and Parasite Genomes
Magazine article from: Genetics; 11/1/2004; ; 700+ words ; ...that this malekilling infection is evolutionarily old, a conclusion supported with...male-killing infections may be evolutionarily transient within host species, en...insect communities. In contrast, an evolutionarily long-lasting infection polymorphism...
An Evolutionarily Conserved Domain of roX2 RNA Is Sufficient for Induction of H4-Lys16 Acetylation on the Drosophila X Chromosome
Magazine article from: Genetics; 11/1/2007; ; 700+ words ; ...this process, we have identified evolutionarily conserved functional domains of roX...secondary structures) of roX RNAs are evolutionarily conserved, as is the case in ribosomal...numerous Drosophila species, identified evolutionarily conserved domains within the roX RNAs...
Two evolutionarily conserved sequence elements for Peg3/Usp29 transcription.(Research article)(Report)
Magazine article from: BMC Molecular Biology; 12/10/2008; ; 700+ words ; ...The 2.5-kb 1 st intron of Peg3 is known to harbor two evolutionarily conserved sequence elements, CSE1 and CSE2 [9]. A single...genomic layout of the mouse Peg3-DMR along with the two evolutionarily conserved sequence elements, the CSE1 (open square) and...
Statistical power of phylo-HMM for evolutionarily conserved element detection.(Research article)
Magazine article from: BMC Bioinformatics; 10/5/2007; ; 700+ words ; ...genome [1, 2]. Regions that evolve more slowly are called evolutionarily conserved elements. Conservation analysis by comparing...state phylo-HMM to perform a genome-wide detection of evolutionarily conserved elements. They showed that this model can yield...
Evolutionarily preserved mechanism governs use of genes.
Newspaper article from: NewsRx Health; 9/6/2009; 700+ words ; ...are related to this worm through a common ancestor that lived a billion years ago. This means that the mechanism has been evolutionarily preserved during nearly one fourth of the time the earth has existed eller one fourth of earth's existence. In humans...
The Evolutionarily Conserved Tetratrico Peptide Repeat Protein Pale Yellow Green7 Is Required for Photosystem I Accumulation in Arabidopsis and Copurifies with the Complex1
Magazine article from: Plant Physiology; 7/1/2006; ; 700+ words ; ...associated cofactors including iron, sulfur, heme, etc. Although many structural and regulatory proteins for PSI are evolutionarily conserved and already present in cyanobacteria, a more detailed analysis uncovered that some of these compounds also differ...
Proteomic Characterization of Evolutionarily Conserved and Variable Proteins of Arabidopsis Cytosolic Ribosomes1[w]
Magazine article from: Plant Physiology; 3/1/2005; ; 700+ words ; ...acetylation, phosphorylation). For example, distinct types of r-proteins S15a and P2 accumulate in ribosomes due to evolutionarily divergence of r-protein genes. Ribosome variation is also due to amino acid sequence divergence and differential phosphorylation...
When is biological control evolutionarily stable (or is it)?
Magazine article from: Ecology; 9/1/1997; ; 700+ words ; ...Control programs, whether emphasizing chemical or biological control agents, often implicitly assume that target species are evolutionarily static, fixed targets. Yet all biological species harbor genetic variation and can respond to environmental change by...
A Novel Family of Lectins Evolutionarily Related to Class V Chitinases: An Example of Neofunctionalization in Legumes1[W][OA]
Magazine article from: Plant Physiology; 6/1/2007; ; 700+ words ; ...structure and sugar specificity, virtually all known plant lectins can be classified into seven families of structurally and evolutionarily related proteins (Van Damme et al, 1998, 2004). Taking into account the obvious differences in both the overall fold...
Concordant Mitochondrial and Nuclear DNA Partitions Define Evolutionarily Significant Units in the Imperiled Pinewoods Darter, Etheostoma mariae (Pisces: Percidae)
Magazine article from: Copeia; 12/18/2008; ; 700+ words ; ...in the Carolina Sandhills. Concordant partitions in nuclear and mitochondrial DNA loci support the designation of two Evolutionarily Significant Units (ESUs): one each from Lumber and Little Pee Dee rivers. The data suggest these populations have been...