News tagged with paternal chromosomes
Discovery of plant 'nourishing gene' brings hope for increased crop seed yield and food security
University of Warwick scientists have discovered a "nourishing gene" which controls the transfer of nutrients from plant to seed - a significant step which could help increase global food production.
Jan 13, 2012 |
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The machinery for recombination is part of the chromosome structure
During the development of gametes, such as egg and sperm cells in humans, chromosomes are broken and rearranged at many positions. Using state of the art technology, the research group of Franz Klein, professor for genetics ...
Aug 09, 2011 |
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The importance of grandmothers in the lives of their grandchildren
(PhysOrg.com) -- It is widely believed that women live long post-reproductive lives to help care for their grandchildren. According to the "Grandmother Hypothesis," post-menopausal women can increase their ...
Oct 29, 2009 |
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Chromosome breakpoints contribute to genetic variation
A new study reveals that - contrary to decades of evolutionary thought - chromosome regions that are prone to breakage when new species are formed are a rich source of genetic variation.
Apr 23, 2009 |
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Study reveals dynamic changes in gene regulation in human stem cells
A team led by scientists at The Scripps Research Institute and the University of California (UC) San Diego has discovered a new type of dynamic change in human stem cells.
May 03, 2012 |
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Adam's rib, revisited: Evolutionary divergence of mammalian sex chromosomes
(Phys.org) -- Males and females... Mars and Venus... XY and XX chromosomes -- all are common memes. At the same time, the evolution of therian (placental and marsupial) sex chromosomes is less widely understood. ...
Apr 18, 2012 |
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Maize gene could lead to bumper harvest
(PhysOrg.com) -- The discovery of a new ‘provisioning’ gene in maize plants that regulates the transfer of nutrients from the plant to the seed could lead to increased crop yields and improve food ...
Jan 16, 2012 |
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Ancient wild horses help unlock past
An international team of researchers has used ancient DNA to produce compelling evidence that the lack of genetic diversity in modern stallions is the result of the domestication process.
Aug 23, 2011 |
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Fishing games gone wrong
When an egg cell is being formed, the cellular machinery which separates chromosomes is extremely imprecise at fishing them out of the cell's interior, scientists at the European Molecular Biology Laboratory ...
Aug 18, 2011 |
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How yeast chromosomes avoid the bad breaks
The human genome is peppered with repeated DNA elements that can vary from a few to thousands of consecutive copies of the same sequence. During meiosis—the cell division that produces sperm and eggs—repetitive ...
Aug 07, 2011 |
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Genome duplication encourages rapid adaptation of plants
Plants adapt to the local weather and soil conditions in which they grow, and these environmental adaptations are known to evolve over thousands of years as mutations slowly accumulate in plants' genetic code. But a University ...
May 03, 2011 |
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Penn anthropologists delve into genetic history of Kazakhstan and the Mongolian expansion
Researchers at the University of Pennsylvania have painted the clearest picture yet of the history of the Kazakhs of the Altai Mountain Range, providing insights into the heritage of a wide swath of people in Central and ...
Apr 28, 2011 |
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Study maps hotspots of genetic rearrangement
Researchers have zoomed in on mouse chromosomes to map hotspots of genetic recombination — sites where DNA breaks and reforms to shuffle genes. The findings of the scientists at the National Institutes ...
Apr 05, 2011 |
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New technology pinpoints genetic differences between cancer and non-cancer patients
A group of researchers led by scientists from the Virginia Bioinformatics Institute (VBI) at Virginia Tech have developed a new technology that detects distinct genetic changes differentiating cancer patients from healthy ...
Feb 22, 2011 |
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