Search results for evolutionary events
Probing question: What is a molecular clock?
Biology /
Nov 20, 2008 |
4.3 / 5 (7) |
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It doesn't tick, it doesn't have hands, and it doesn't tell you what time of day it is. But a molecular clock does tell time -- on an epoch scale. The molecular clock, explained S. Blair Hedges, is a tool ...
Fossil data plugs gaps in current knowledge, study shows
Biology /
Oct 02, 2007 |
3.9 / 5 (15) |
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Researchers have shown for the first time that fossils can be used as effectively as living species in understanding the complex branching in the evolutionary tree of life.
Evolution may take giant leaps
Dec 11, 2009 |
4.5 / 5 (27) |
36
(PhysOrg.com) -- A new study of thousands of species of plants and animals suggests new species may arise from rare events instead of through an accumulation of small changes made in response to changes in ...
Major mid-century influenza epidemics caused by novel hybrid viruses
Feb 29, 2008 |
4.2 / 5 (9) |
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Reassortment of the influenza A virus occurs frequently throughout its evolutionary history, according to a new study published February 29 in the open-access journal PLoS Pathogens.
Petascale computing tools could provide deeper insight into genomic evolution
Technology / Computer Sciences
Nov 17, 2009 |
5 / 5 (3) |
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Technological advances in high-throughput DNA sequencing have opened up the possibility of determining how living things are related by analyzing the ways in which their genes have been rearranged on chromosomes. ...
Scientists fix bugs in our understanding of evolution
Jun 19, 2008 |
4.3 / 5 (29) |
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[B]A new computational tool allows the most accurate insights into evolution ever[/B] What makes a human different from a chimp? Researchers from the European Molecular Biology Laboratory's European Bioinformatics Ins ...
Reproducing early and often is the key to rapid evolution in plants
Biology /
Oct 02, 2008 |
4.3 / 5 (4) |
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Yale researchers have harnessed the power of 21st century computing to confirm an idea first proposed in 1916 — that plants with rapid reproductive cycles evolve faster. Their findings appear in the October 3rd edition of ...
Monkey gene that blocks AIDS viruses evolved more than once
Medicine & Health / HIV & AIDS
Feb 29, 2008 |
4.6 / 5 (14) |
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Researchers at Harvard Medical School have identified a gene in Asian monkeys that may have evolved as a defense against lentiviruses, the group of viruses that includes HIV. The study, published February 29 in the open-access ...
Evolution education for K-12 teachers needs beefing up, says CU-Boulder professor
Feb 15, 2009 |
5 / 5 (1) |
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A failure to grasp the fundamentals of biological systems may be leaving K-12 teachers and students vulnerable to claims by intelligent design creationists, new-age homeopaths and other "hucksters," according to a University ...
Trimming the Tree of Life
Oct 08, 2009 |
5 / 5 (3) |
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(PhysOrg.com) -- In a sense, Antonis Rokas is an arborist: He is a member of a small cadre to scientists who are applying the growing power of genomics to untangle and correctly arrange the branches of the ...
Poisonous Poisson
Dec 04, 2009 |
4 / 5 (6) |
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In contrast to the exhaustive research into venom produced by snakes and spiders, venomous fish have been neglected and remain something of a mystery. Now, a study of 158 catfish species, published in the ...
New links between lucid dreaming and psychosis could revive dream therapy in psychiatry
Medicine & Health / Psychology & Psychiatry
Jul 29, 2009 |
4.2 / 5 (6) |
2
Similarities in brain activity during lucid dreaming and psychosis suggest that dream therapy may be useful in psychiatric treatment, a European Science Foundation (ESF) workshop has found. This is strengthened by the potential ...
Scientists uncover evolutionary keys to common birth disorders
Biology /
Jan 14, 2009 |
5 / 5 (1) |
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The work of Forsyth scientist Peter Jezewski, DDS, Ph.D., has revealed that duplication and diversification of protein regions ('modules') within ancient master control genes is key to the understanding of certain birth disorders. ...
New understanding of how we remember traumatic events
Oct 23, 2008 |
4.6 / 5 (9) |
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(PhysOrg.com) -- Neuroscientists at The University of Queensland have discovered a new way to explain how emotional events can sometimes lead to disturbing long term memories.
Genome duplication responsible for more plant species than previously thought
Aug 12, 2009 |
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2
Extra genomes appear, on average, to offer no benefit or disadvantage to plants, but still play a key role in the origin of new species, say scientists from Indiana University Bloomington and three other institutions ...
