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Extant in Medical News

Biologists Question Animal Brain Size Theory

... were influenced by more than just sociality within the species. "This is a sophisticated and powerful analysis that integrates fossils with extant species of carnivores," Flynn, dean of the Richard Gilder Graduate School at the American Museum of Natural History, said in a museum news release. ...

Early Arctic Spring Indication of Climate Change

... of researchers said . "Despite uncertainties in the magnitude of expected global warming over the next century, one consistent feature of extant and projected changes is that Arctic environments are and will be exposed to the greatest warming," said Toke T. Hoye of the National Environmental ...

Will The Tropical Forests Survive The Deforestation Scenario?

... to improve conditions in tropical urban settings to encourage urbanization and preemptive conservation efforts in countries with large areas of extant forest and large projected rates of future human population growth," the authors conclude. "We hope that this first attempt inspires others to ...

Repeated checking causes memory distrust

... or a real kitchen faucet (irrelevant checking) in a standardized, ritualized manner. The researchers thought of this as one way to build upon the extant work on repetition and metamemory, i.e., to conduct an experimental investigation of task repetition, memory and memory confidence in an environment ...
Extant in Biological News

Estimation of isolation times in the Drosophila simulans complex

... larger effective population size for the ancestral population than for extant D. simulans. "Essentially, this is about the formation of island ... and, in the case of the 4-parameter model, the ratio of ancestral to extant effective population size) from the multilocus DNA sequence data. Loci ...

Dosage of fertilizer helps to enhance quality of wheat

... making, the quality is determined by its genetic configuration and the extant climatic conditions, although research undertaken to date reveal that a ... enabling the maximum yield for wheat crop, in the climatic conditions extant in Araba, is about 155 kg of nitrogen per hectare. She also pointed out ...

Fossil data plugs gaps in current knowledge, study shows

... how much the family tree of life needed to be altered when data from these extant and extinct species is included or removed. They found no difference in the impact that the fossil groups made on the family tree compared to extant groups. Evolutionary biologists try to reconstruct rapid and deep ...

Coralline algae in the Mediterranean lost their tropical element between 5 and 7 million years ago

... in the Sorbas basin (Almera) than in Salento (Italy). Furthermore, the main components of the coralline algae assemblages found in shallow water are extant species that are very common in the Mediterranean. Other species, such as Spongites fruticulosus and Phymatolithon calcareum, have lived in the ...

Genome projects launched for three extreme-environment animals

... in China, and inhabits alpine meadow and desert regions at an altitude of 3,500-5,500 meters above sea level. The Tibetan antelope is the only extant species in the Pantholops genus. It has been evolutionarily isolated since the Himalayan orogeny, and has undergone millions of years of evolution ...

February 2009 Geology and GSA Today media highlights

... layer likely corresponds to widespread and ancient clay deposits discovered by the Mars Express mission, and may constitute a favored environment for extant thermophilic ("heat-loving") organisms on Mars. Mantle weakening and strain localization: Implications for the long-term strength of the ...

ASU researchers receive NIH awards for studies of malaria and emergent disease

... nonhuman primate malaria isolates, but also field isolates from human and nonhuman primate malarias in order to assess the demographic history of the extant populations, explore host-specificity, and assess putative genetic variation that may be under positive selection by the host immune system." ...

Smithsonian perspective: Biodiversity in a warmer world

... with the caveat that warming in fragmented landscapes or crossing a temperature threshold could cause severe extinctions in the future. extant species that evolved in warmer climates should retain the ability to tolerate warmer climates in the future, as argued in a 2001 issue of Science by ...

New 150 million-year-old crab species discovered

... these ancient crabs from the Prosopidae family existed more than 150 million years ago during the Jurassic period. Studying primitive and extant crabs helps determine various aspects of biodiversity and patterns of evolution, such as when arthropods diversified, says Dr. Carrie Schweitzer, ...

First orchid fossil puts showy blooms at some 80 million years old

... dominicana, is now extinct, the scientists' analysis of the shape and configuration of its cargo of pollen places it firmly within one of five extant subfamilies of orchids. The specimen is one of just a few fossils known to illustrate directly a plant-pollinator association. The specific ...
Extant in Biological Technology

Brewing better beer: Scientists determine the genomic origins of lager yeasts

... by brewers today may not have arisen from a single hybridization event, as was previously believed. "There were two independent origins of today's extant S. pastorianus strains," said Sherlock. "It is likely that each of these groups derived the S. cerevisiae portions of their genomes from ...
Extant in Biological Definition

Extinction

... Eohippus (an ancient horse-like animal) was the ancestor of several extant species including the horse , the zebra and the donkey . The Eohippus ... of conservation programs. Species which are not extinct are termed extant . Contents showTocToggle("show","hide") 1 Definition ...

Endosymbiont

... gut, mouth or nephridia). Bacterial endosymbionts in other marine invertebrates Extracellular endosymbionts are also represented in all 5 extant classes of Echinodermata ( Crinoidea , Ophiuroidea , Asteroidea , Echinoidea , and Holothuroidea ). Little is known of the nature of the ...

Endosymbiont

... gut, mouth or nephridia). Bacterial endosymbionts in other marine invertebrates Extracellular endosymbionts are also represented in all 5 extant classes of Echinodermata ( Crinoidea , Ophiuroidea , Asteroidea , Echinoidea , and Holothuroidea ). Little is known of the nature of the ...

Evolution

... principal mechanism that causes evolution. In common parlance the word "evolution" is often used as a shorthand for both the modern theory that all extant species share a common ancestor as well as the mechanisms through which natural selection acts to change populations over time. This theory was ...

Human

... , Human physical appearance , Human height Biologically, humans are defined as hominids of the species Homo sapiens , of which the only extant subspecies is Homo sapiens sapiens . They are usually considered the only surviving species in the genus Homo , although some argue that the ...

Immunology

... degree of accuracy). Such testing is also used to distinguish compatible blood types . Evolutionary immunology Study of the immune system in extant and extinct species is capable of giving us a key understanding of the evolution of species and the immune system. A development of complexity ...

Plant

... Phytophilia (love of plants) Vegetation Structure External links Tree of Life Chaw, S.-M. et al. Molecular Phylogeny of extant Gymnosperms and Seed Plant Evolution: Analysis of Nuclear 18s rRNA Sequences (pdf file) Molec. Biol. Evol . 14 (1): 56-68. 1997. Botanical ...

Plant

... Phytophilia (love of plants) Vegetation Structure External links Tree of Life Chaw, S.-M. et al. Molecular Phylogeny of extant Gymnosperms and Seed Plant Evolution: Analysis of Nuclear 18s rRNA Sequences (pdf file) Molec. Biol. Evol . 14 (1): 56-68. 1997. Botanical ...

Virus

... gives any other form, including such "reconstructed" Latin plural forms as viri (which actually means men ). (No plural form appears in any extant Latin manuscript). (See plural of virus ). Viruses: non-living or alive? A virus makes use of existing enzymes and other molecules of a ...

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Extant in Biological Dictionary

Extant

... Hank Hall, also known as extant , the DC Comics supervillain ... Retrieved from "http://en.wikipedia.org /wiki/ extant " Categories: Disambiguation pages ... ... Armageddon 2001. ... Information about extant in the free online English dictionary and ...

Phylogenetic tree

... and Conclusion ... The universal phylogenetic tree not only spans all extant ... The universal phylogenetic tree not only spans all extant life, but ... versal phylogenetic tree represents the first stage in ...

Spontaneous generation

... idea of spontaneous generation was no doubt ... spontaneous generation did not square well with his ... spontaneous generation of many extant species, this ... The assertion that life can instantaneously arise from nonliving matter is called spontaneous generation . Here are the ...

Seedless vascular plants

... plants are homosporous, the spores grow into a ... III. There are three phyla of extinct seedless vascular plants ... A. The majority of extant seedless vascular plants belong to this phylum ... I. Evolution of vascular plants ( seedless & seed producing): A. To prevent ...

Seed plant

... Seed plant phylogeny inferred from all three plant genomes: Monophyly of extant ... Phylogeny of seed plants based on evidence from eight genes. ... A seed ( ), referred to as a kernel in some plants, is a small ...

RNA virus

... Virus Purification Kits User Manual. Table of Contents. I. Introduction ... It is quite feasible that RNA genomes of viruses are the only extant lineal ... See here for a brief description of types of RNA viruses and their genomes. ... virus replication.htm' target='_blank'>Full article ...

Monophyletic

... Monophyletic ... A monophyletic taxon is a good taxon in an evolutionary ... Circle these monophyletic taxa, and be sure to label your extant species with ... Groups that may not be monophyletic ... Generally, we try to avoid non- monophyletic groups in the Tree of Life. ... are ...

Dimorphism

... selection. ... In humans, it seems, sexual dimorphism has decreased during our evolution. ... process(es) regulating canine dimorphism in extant ... pressure, body size dimorphism , dietary constraints, ... velopment of dimorphism among groups of closely ... dimorphism . Definition ...

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Other Contents
(Date:4/17/2014)... scientists and their partners have found that their proprietary ... transmission of multiple sexually transmitted infections (STIs) in both ... virus 2 (HSV-2), and human papillomavirus (HPV). The USAID-funded ... is effective against multiple strains of HIV, and has ... three viruses of at least eight hours prior to ...
(Date:4/17/2014)... therapy improves general blood flow and alleviates muscle ... researchers at the University of Illinois at Chicago. ... print in the Archives of Physical Medicine ... vascular function in people who had not exercised, ... of their level of physical activity. , Improved ...
(Date:4/17/2014)... of Canadians surveyed said they would participate in public ... of genetic conditions, only 80 per cent said they ... sequence their newborns, genomes.,Most newborns in North America have ... two of life in which a tiny amount of ... about five to 54 conditions, depending on the state ...
(Date:4/17/2014)... as the leading weapon against the deadly disease could ... research indicating it simply needs to be administered differently. ... cheap anti-malarial drug chloroquine in treating and preventing the ... half a million people each year around the world. ... to chloroquine, but research carried out at the Australian ...
(Date:4/16/2014)... Ariz. April 15, 2014 The Translational Genomics ... at their annual Founders Dinner for their support of ... event took place March 28 in Scottsdale. , Catherine ... Ivy Foundation, received TGen,s John S. McCain Leadership Award, ...
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(Date:4/17/2014)... in about one per eight hundred births, Down syndrome ... genetic cause of intellectual disability. It results from a ... third copy of chromosome 21 (1% of the human ... team in the Department of Genetic Medicine and Development ... published in Nature , shed light on how ...
(Date:4/17/2014)... Clemson professor Rajendra Singh Thursday as a "Champion ... expand solar deployment in the residential, commercial and ... Professor of Electrical and Computer Engineering and director ... a local hero leading the charge across the ... solar power and driving policy changes at the ...
(Date:4/17/2014)... channels are implicated in many serious conditions such as ... potential target for drug therapies. Unfortunately, there is still ... Cambridge research provides fresh and unexpected insight into the ... components - β-subunit molecules - which are responsible for ... published in the most recent edition of the ...
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