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Latest Genetic memory Stories

2014-02-10 11:03:42

A Lawrence Livermore National Laboratory physicist and his colleagues have found a new application for the tools and mathematics typically used in physics to help solve problems in biology. Specifically, the team used statistical mechanics and mathematical modeling to shed light on something known as epigenetic memory -- how an organism can create a biological memory of some variable condition, such as quality of nutrition or temperature. "The work highlights the interdisciplinary...

Seeds Of Defense Being Planted
2012-08-08 07:16:52

Salk study finds stress triggers widespread epigenetic changes that aid in disease resistance It was long thought that methylation, a crucial part of normal organism development, was a static modification of DNA that could not be altered by environmental conditions. New findings by researchers at the Salk Institute for Biological Studies, however, suggest that the DNA of organisms exposed to stress undergo changes in DNA methylation patterns that alter how genes are regulated. The...

2012-06-27 14:24:19

Epigenetic memory may pass RNA silencing from 1 generation to the next Organisms employ a fascinating array of strategies to identify and restrain invasive pieces of foreign DNA, such as those introduced by viruses. For example, many viruses produce double-stranded (ds)RNA during their life cycle and the RNA interference (RNAi) mechanism is thought to recognize this structural feature to initiate a silencing response. Now, UMass Medical School researchers have identified a mechanism...

2011-07-25 15:41:16

Researchers funded by the Biotechnology and Biological Sciences Research Council (BBSRC) at the John Innes Centre have made a discovery, reported this evening (24 July) in Nature, that explains how an organism can create a biological memory of some variable condition, such as quality of nutrition or temperature. The discovery explains the mechanism of this memory "“ a sort of biological switch "“ and how it can also be inherited by offspring. The work was led by Professor Martin...

2011-06-02 13:39:37

The study may allow finding the unknown origin of metastasis and improving treatments Until a decade, it was believed that differences between people were due solely to the existence of genetic changes, which are alterations in the sequence of our genes. The discoveries made during these last ten years show that beings with the same genetics like the twins and cloned animals may have different characteristics and disease due to epigenetic changes. Epigenetics involves chemical signatures that...

2009-05-18 10:35:46

Article reviews evidence for epigenetic inheritance in wide range of speciesFor years, genes have been considered the one and only way biological traits could be passed down through generations of organisms.Not anymore.Increasingly, biologists are finding that non-genetic variation acquired during the life of an organism can sometimes be passed on to offspring"”a phenomenon known as epigenetic inheritance. An article forthcoming in the July issue of The Quarterly Review of Biology lists...

2009-04-02 13:12:29

U.S. scientists say they have proposed a definition of epigenetics -- a new research field focusing on heritable genetic alterations not caused by DNA. Ali Shilatifard of the Stowers Institute for Medical Research met with colleagues in December at the Cold Spring Harbor Laboratory in New York to develop a consensus definition of epigenetic traits for consideration by the broader research community. Shilatifard said the definition is intended to address confusion within the scientific...


Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'karpos', fruit.
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