Category Archives: Genetics

Listeria monocytogenes is a food-borne Gram positive bacteria that causes the infection listeriosis. It is responsible for serious clinical manifestations including gastroenteritis, and meningitis and encephalitis in newborns, with 20 to 30 % of clinical infections resulting in death. […]

Although not the most important among the many different animals studied by Charles Darwin during his amazing journeys on board the Beagle, the little finches from the Galápagos Islands have become one of the most popular representatives of Darwin’s […]

DNA damage is one of the most deleterious forms of cellular damage. If unrepaired, DNA lesions can create genomic instability, a hallmark of cancer . As most of the DNA is confined to the nucleus, for many years the study […]

‘Yo soy yo y mi circumstancia, y si no la salvo a ella no me salvo yo’ . José Ortega y Gasset (Meditaciones del Quijote, 1914). . In my first article for Mapping Ignorance I stated that “destiny” was an unrealistic […]

The last advances in genetics and genomics are leading a change in the paradigm about how to treat diseases. Epigenetics is the science field that studies how gene expression is regulated. Several modifications on the genes such as DNA-methylation, […]

Under the threat of those annoying genetic parasites called viruses, eukaryotic cells developed, on the top of a wide innate defence, a curious and efficient RNA-based adaptive immune system referred as RNA interference or iRNA. You will find more […]

The idea of a living fossil is rather intuitive. We think that a kind of organism deserves that denomination if it has been living in the planet during a very large period of time apparently without any change. A […]

Although we assume evolution of complex life forms as a matter of fact, we must admit that our brains are not ready for such an odd concept. Even though we can slightly imagine what a million year means, when we […]

Nowadays there are still people that believe in destiny. However the scientific community more and more is bringing light to that subject showing that although the genetic material could program ourselves to suffer some pathologies, the day-to-day experiences are the […]

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Think on a cell, it is alive and, among other things, it lives to reproduce itself. The paradigm of cell division is the mitosis, a wonderful dance orchestrated to equitably distribute the possessions of the mother cell: molecular structures, machinery […]