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Latest Gene duplication Stories

2012-05-18 22:58:20

Evidence that comparing genes across species is biologically useful Researchers at the SIB Swiss Institute of Bioinformatics and the EMBL-European Bioinformatics Institute have confirmed the long-held conjecture that studying the genes we share with other animals is a viable means of extrapolating information about human biology. The study, published in the open access journal PLoS Computational Biology, shows how bioinformatics makes it possible to test the conjecture. Scientists have...

2012-05-16 23:33:22

What can a fish tell us about human brain development? Researchers at Duke University Medical Center transplanted a set of human genes into a zebrafish and then used it to identify genes responsible for head size at birth. Researchers at Duke University Medical Center transplanted a set of human genes into a zebrafish and then used it to identify genes responsible for head size at birth. Head size in human babies is a feature that is related to autism, a condition that recent figures...

2012-05-09 05:30:20

(Ivanhoe Newswire)– The human brain is the center of the human nervous system and has the same general structure as the brains of other mammals, but it´s than expected. According to a pair of studies, a partial, duplicate copy of a gene appears to be responsible for the critical features of the human brain that distinguish us from our closest primate kin. The momentous gene duplication event occurred about two or three million years ago, at a critical transition in the evolution...

Human Brain Evolution Triggered By Duplicate Gene
2012-05-04 08:21:12

Brett Smith for Redorbit.com Scientists may have just found a ℠missing link´ in the form of a partial, duplicate gene that appears to be responsible for human brain development - the most distinguishing characteristic of our species. The genetic variation occurred in man´s ape-like ancestor about two or three million years ago, according to a pair of studies published online in the journal Cell. A team led by researchers at the Scripps Research Institute found that a...

2012-04-19 21:04:45

A new approach to investigating hard-to-find chromosomal abnormalities has identified 33 genes associated with autism and related disorders, 22 for the first time. Several of these genes also appear to be altered in different ways in individuals with psychiatric disorders such as schizophrenia, symptoms of which may begin in adolescence or adulthood. "By sequencing the genomes of a group of children with neurodevelopmental abnormalities, including autism, who were also known to have...

Image 1 - Chromosome Analyses Of Prickly Pear Cacti Reveal Southern Glacial Refugia
2012-02-15 04:21:46

Analysis of chromosome number variation among species of a North American group of prickly pear cacti (nopales) showed that the most widespread species encountered are of hybrid origin. Those widespread species likely originated from hybridization among closely related parental species from western and southeastern North America. This study was published in the open access journal Comparative Cytogenetics. The prickly pear cacti (of the genus Opuntia) are endemic to the Americas. The genus...

2012-01-19 17:52:01

A new University of Florida study shows a hybrid plant species may experience rapid genome evolution in predictable patterns, meaning evolution repeats itself in populations of independent origin. Researchers analyzed genes of a naturally occurring hybrid species, Tragopogon miscellus, and the study, published online today in Current Biology, suggests genome evolution in hybrid plants may follow a set of “rules” that determine which parental genes are lost. The research may be...

2012-01-09 12:07:32

The anxiety and behavioral issues associated with excess MeCP2 protein result from overexpression of two genes (Crh [corticotropin-releasing hormone] and Oprm 1 [mu-opioid receptor MOR 1]), which may point the way to treating these problems in patients with too much of the protein, said Baylor College of Medicine scientists in a report that appears online in the journal Nature Genetics. Much of the work was done at the Jan and Dan L. Duncan Neurological Research Institute at Texas...

2011-12-28 08:10:14

An important part of saving a species is often understanding its DNA. Through a collaborative effort including 14 scientists representing organizations across Europe and the United States, researchers have been able to analyze the genome of the great ape species of the world. "A robust appreciation of the means and methods of the evolution of genomes which underlies the diversification of the great apes requires a more detailed knowledge of genome variation that is poorly revealed by...

2011-10-06 13:08:46

In children with genomic disorders, often a gamete — egg or sperm — has gone disastrously awry with either a duplication or deletion of genetic material that results in physical and neurological problems for the subsequent child. Previous studies have identified a procedure called nonallelic homologous recombination, which occurs during meiosis or sexual cell division, as the event that most commonly occurs and results in this mistake in DNA. Researchers from Baylor College...


Word of the Day
lambent
  • Licking.
  • Hence Running along or over a surface, as if in the act of licking; flowing over or along; lapping or bathing; softly bright; gleaming.
This word comes the Latin 'lambere,' to lick.
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