(Phys.org)—Genome editing for purposes of replication and repair is handled by enzymes called endonucleases, which cleave DNA strands at very specific sites. These are called "restriction sites," composed of palendromic ...
Karyotype is usually a stable feature of each species since chromosomal changes, if they occur, may contribute to the formation of barriers between populations causing the establishment of reproductive isolation and speciation ...
Biotechnology
Nov 3, 2014
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With the completion of the sequencing and analysis of the gibbon genome, scientists now know more about why this small ape has a rapid rate of chromosomal rearrangements, providing information that broadens understanding ...
Biotechnology
Sep 10, 2014
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In a pioneer study published in the latest issue of the scientific journal Nature Communications, a research team at the Instituto Gulbenkian de Ciência (IGC; Portugal), led by Miguel Godinho Ferreira in collaboration with ...
Biotechnology
Aug 23, 2013
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The fusion of blood vessels during the formation of the vascular system follows a uniform process. In this process, the blood vessels involved go through different phases of a common choreography, in which the splitting and ...
Cell & Microbiology
Jun 11, 2013
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(Phys.org) —Reach for a tall glass of iced tea. Don't drink. Look at the glass instead. The glass is an amorphous solid, consisting of molecules jumbled in disarray. It's the complete opposite of the ice in your drink. ...
Condensed Matter
May 1, 2013
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In developing vertebrates, the brain and spinal cord originate from an embryonic structure known as the neural tube. This initially forms as a flat 'neural plate', which subsequently folds around and closes up to form a tubular ...
Cell & Microbiology
Nov 9, 2012
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(Phys.org)—A study of more than 6,000 genes in a common species of yeast has identified the pathways that govern the instability of GAA/TTC repeats. In humans, the expansions of these repeats is known to inactivate a gene ...
Cell & Microbiology
Sep 10, 2012
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(Phys.org)—The sorcerer's apprentice started a water-carrying system, but couldn't stop it, and soon he was up to his neck in water, and trouble. Living cells have a better design: When they activate a gene, they have a ...
Cell & Microbiology
Sep 6, 2012
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Most proteins have multiple moving parts that rearrange into different conformations to execute particular functions. Such changes may be induced by molecules in the immediate environment, including water and similar solvents ...
General Physics
Jan 6, 2012
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