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Which came first, the chicken genome or the egg genome?
10-08-2007 · EurekAlert!Researchers have created the first evolutionary history of the duplications in the human genome that are partly responsible for both disease and recent genetic innovations. This work marks a significant step toward a better understanding of what genomic changes paved the way for modern humans, when these duplications occurred and what the associated costs are - in terms of susceptibility to disease-causing genetic mutations.
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Keywords: came, chicken, genome, egg
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- Few Clues About African Ancestry To Be Found In Mitochondrial DNA
10-14-2006 · ScienceDaily
Mitochondrial DNA may not hold the key to your origins after all. A study published today in the open access journal BMC Biology reveals that fewer than 10 percent of African American mitochondrial DNA sequences analysed can be matched to mitochondrial DNA from one single African ethnic group. The current study suggests that only one in nine African Americans may be able to find clues about where their ancestors came from, in their mitochondrial DNA.
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- Don't advertise during sexy programmes - the viewer won't remember
02-20-2007 · EurekAlert!
People are less able to recall the brand of products advertised during programmes with a lot of sexual content, than if the advert is placed in similar programme that has no sexual content. This was the key message that came from research carried out at the Department of Psychology at University College London by Ellie Parker and Adrian Furnham. The research is published in this month's edition of Applied Cognitive Psychology.
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- Field school explores 19th Century digs
06-29-2007 · EurekAlert!
About 250 years before Daniel Massey built his farm house in Huntingdon County, Pennsylvania, his great-grandfather came to the New World as an indentured servant. Now, about 150 years later, Penn State's Archaeological Field School is excavating Daniel's house to see how far he came from those humble beginnings.
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- Have we sealed the universe's fate by looking at it?
11-21-2007 · EurekAlert!
Have we hastened the demise of the universe just be looking at it? That's the startling question posed by a pair of physicists who suggest that by observing and measuring dark energy we may have accidentally nudged the universe back to a point early in its history when it was more likely to end. The researchers in the US came to the conclusion by calculating how the energy state of our universe might have evolved.
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- High cholesterol diets modify gene expression in atherosclerosis
06-12-2007 · EurekAlert!
Scientists from the department of Biochemistry and Molecular Biology 1 of the University of Granada have proven that a high cholesterol diet causes changes in gene expression of chicken aortic smooth muscle cells at the early stages of an experimental atherosclerosis. This study associates cholesterol intake with the expression of genes codifying certain proteins, even before the disease is detected on blood vessel walls.
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- A new male-specific gene in algae unveils an origin of male and female
12-18-2006 · EurekAlert!
By studying the genetics of two closely related species of green algae that practice different forms of sexual reproduction, researchers have shed light on one route by which evolution gave rise to reproduction though the joining of distinct sperm and egg cells.
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- First baby is born after oocytes were matured in the lab and frozen
07-02-2007 · EurekAlert!
The first baby to be created from an egg that had been matured in the laboratory, frozen, thawed and then fertilized, has been born in Canada. Three other women are pregnant by the same process. The research was presented to the 23rd annual meeting of the European Society of Human Reproduction and Embryology on Monday, July 2.
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- Comparing chimp and human DNA
10-12-2006 · EurekAlert!
Scientists look to the chimpanzee genome to better understand our own. In a new study, researchers used comparative genomics to investigate the properties of a set of 202 carefully screened "highly accelerated regions." They searched for stretches of DNA that were highly conserved between chimpanzees, mice and rats, comparing those sequences to the human genome sequence in order to unravel the evolutionary forces at work behind the human genome's fastest evolving regions.
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- Neuron cell stickiness may hold key to evolution of the human brain
11-02-2006 · EurekAlert!
The stickiness of human neurons may have been a key factor in why the human brain evolved beyond the brains of our primate relatives. In a study comparing the genomes of humans, chimpanzees and other vertebrates, researchers at the US Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and Joint Genome Institute (JGI) found a strikingly high degree of genetic differences in DNA sequences that appear to regulate genes involved in nerve cell adhesion molecules.
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- Genomic 'firestorms' underlie aggressive breast cancer progression
11-30-2006 · EurekAlert!
The first high-resolution analysis of genomic alterations in breast tumors is reported in the scientific journal Genome Research. In this analysis, scientists from Cold Spring Harbor Laboratory, in collaboration with researchers from Scandinavia, identified three distinct patterns of genomic variation that underlie breast tumor formation, one of which -- "firestorms" -- may be predictive of aggressive disease progression and short survival.
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