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Human chromosomes (grey) capped by telomeres (white)
We all know the benefits of regular exercise but scientists now have proof that it can really make you look younger! Telomeres, regions of highly repetitive DNA at the end of a linear chromosome shorten over time. The shortening of telomeres is strongly correlated with ageing and it is […]
Scientists from deCODE genetics have reported the discovery of two common, single-letter variants in the sequence of the human genome (SNPs) that regulate one of the principle motors of evolution. Versions of the two SNPs, located on chromosome 4p16, have a genome-wide impact on the rate of recombination - the reshuffling of the genome that […]
Most gems, such as diamonds, rubies and sapphires, are crystalline inorganic and inert materials. Within each crystal structure, the atoms have precise locations, which give each material its unique properties. Diamond’s renowned hardness and refractive properties are due to its structure — the precise location of its carbon atoms.
Using just one kind of nanoparticle (gold), North […]
New research has shown evidence that genes have the ability to recognize similarities in each other from a distance, without any proteins or other biological molecules aiding the process. This discovery could explain how similar genes find each other and group together in order to perform key processes involved in the evolution of species.
According to […]
Micrograph images of synthetic Mycoplasma genitalium
J Craig Venter and his team at the J Craig Venter Institute Rockville, Md. Venter continue to expand our horizons of what constitutes life. They have built, from scratch, a synthetic chromosome containing all the genetic material needed to produce a primitive bacterium - this is considered a giant step toward the creation […]
The EU funded GEN2PHEN project plans to internationally orchestrate the electronic gathering and use of data that show how gene sequences (’genotypes’) contribute to individual differences in disease, drug response, and other characteristics (’phenotypes’). These relationships (usually in the form of “genotype-phenotype” information stored in scattered databases) are deemed to become essential for future prognosis, […]
Early embryos yield stem cells,(photo courtesy of BBC news www.bbc.co.uk/news)
The Uk’s fertility regulator Human Fertilisation and Embryology Authority (HFEA) has given the green light to two teams of scientists for the creation of hybrid human-animal embryos.
Scientists, research institutions and patient groups have challenged the UK government for much of the last year: the Department of Health wanted […]
Embryonic stem cell
A study of twin four year old girls has identified a rogue cell as a culprit in childhood leukemia.
Both twins were found to have the “pre-leukemic” cells in their bone marrow, although, to date, only one has developed leukemia. Researchers found they both have “pre-leukemic stem cells” containing a mutated gene, which forms when […]
Caenorhabditis elegans (C.elegans)
I’m sure like all of you with young kids, I don’t get enough sleep. I don’t need much naturally but an extra hour or so here and there would be great! The roundworm C. elegans, a staple of laboratory research, may be key in unlocking one of the central biological mysteries: why […]
In evolutionary terms bats and mice are separated by millions of years.
An MD Anderson team led by Dr Richard Behringer successfully switched the mouse Prx1 gene regulatory element with the Prx1 gene regulatory region from a bat - the resulting transgenic mice displayed abnormally long forelimbs.
While forelimb length is just one of several key […]
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