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Tag: DNA

17 Results

  • Repeating in intervals

    Repeating in intervals

    Nucleosomes are the basic units of a chromatin structure.

    June 13, 2018
  • DNA and the Indian system

    DNA and the Indian system

    The admissibility of DNA evidence in courts remains a grey area, writes Ashok Bhan.

    June 7, 2018
  • Splitting and pairing up

    Splitting and pairing up

    Breaking the rule of two is found to make genetics go berserk.

    June 6, 2018
  • Inside the genome

    Inside the genome

    Here’s a look at the process of DNA renaturation that led to the discovery of repeated sequences in DNA.

    May 16, 2018
  • DNA data banks to be set up at national, state level to store DNA profiles

    DNA data banks to be set up at national, state level to store DNA profiles

    DNA data banks will be set up at the national and state level to store profiles, and those who leak the information stored in such facilities will be punished with a jail term of up to three years, according to a draft bill on DNA technology being finalised by the Law Ministry.

    May 13, 2018
  • Speed reading from storage

    Speed reading from storage

    Deoxyribonucleic acid, the molecular code found in the nuclei of living cells, is the most compact and hardy data storage system we have encountered. The nucleus of microscopic cells contains a giant molecule, billions of units long and compactly folded, with the code for all the proteins that the cells of an organism would produce, …

    February 20, 2018
  • Storing vital information

    Storing vital information

    Bacteriophages are viruses that infect bacteria. They have been objects of scientific study since the 1930s, and much of our early understanding of molecular genetics came from experiments involving these viruses. One of the most thoroughly studied of the phages that infect the bacterium Escherichia coli is bacteriophage T2. During infection, this virus attaches to …

    February 13, 2018
  • Taking organs from animals

    Taking organs from animals

    Scientists are working on transplanting entire hearts, liver, kidneys, pancreas and lungs from animals to humans. The increasing demand for organs, tissues, and cells, and the dearth of available human organs, have focused scientific interest in taking organs from animals. The term for the transplanting of organs from one species to another is called xenotransplantation …

    January 21, 2018
  • Plugging escape routes

    Plugging escape routes

    Pathogens have a tendency to develop resistance. The usual pathway is through chance mutations that have inborn resistance. These mutants, though in small numbers, survive the attack by drugs and the body’s mechanisms against the original organisms, and they thrive, because the drugs reduce their competitors for resources. Mutants hence multiply and grow into a …

    January 17, 2018
  • Editing genes like alphabets

    Editing genes like alphabets

    The journal, Nature, has selected David R Liu, a researcher at the Massachusetts Institute of Technology, Boston, as the first of the 10 people who mattered in 2017. Liu has “developed gene-editing tools that are new to nature, and that could one day save lives”, says the write-up in the journal. In October 2017, the …

    January 3, 2018
  • Indian cricketers undergoing DNA/genetic fitness test

    Indian cricketers undergoing DNA/genetic fitness test

    The test helps a sportsman improve his speed, in fat burning, endurance, recovery time, and muscle building.

    November 12, 2017
  • With myriad functions

    With myriad functions

    Membrane proteins have not yielded as well as other proteins to biochemical techniques, mainly because of the problems involved in isolating and purifying hydrophobic proteins in physiologically active form. Procedures such as SDS-polyacrylamide electrophoresis and hydropathy analysis have certainly been useful, as have labeling techniques involving radioisotopes or fluorescent antibodies. In the last three decades, …

    October 25, 2017
  • Six genes linked to preterm birth identified

    Six genes linked to preterm birth identified

    US researchers have found six gene variants that have the potential to influence whether a woman is likely to have a preterm baby, a finding that could lead to new ways to prevent preterm birth and its consequences — the leading cause of death among children under age 5 worldwide. The findings showed that mutations …

    September 7, 2017
  • Discovery of simple method to extract DNA claimed

    Discovery of simple method to extract DNA claimed

    Iraqi scientists at Al-Qasim Green University claim to have found a “universal, rapid and inexpensive” method for the isolation of DNA (deoxyribonucleic acid) from the blood of a wide range of species for genomic studies. Currently there is no common procedure for extracting DNA from the blood of both mammals and birds since each species …

    August 18, 2017
  • From fantasy to possibility

    From fantasy to possibility

    A landmark study suggests that scientists could soon edit out genetic mutations to prevent babies being born with diseases. The technique could eventually let doctors remove inherited conditions from embryos before they go on to become a child. That, in turn, opens the possibility for inherited diseases to be wiped out entirely, according to doctors. …

    August 8, 2017
  • Lack of Vitamin E may affect learning skills in babies

    Lack of Vitamin E may affect learning skills in babies

    Babies who lacked vitamin E nourishment when in the womb are likely to be at an increased risk of developing impairments in mental skills such as learning and metabolic problems, a research has showed. The study, conducted on zebrafish because their neurological development is similar to that of humans, showed that vitamin E-deficient embryos of …

    July 30, 2017
  • New life-expectancy markers identified

    New life-expectancy markers identified

    A Swiss-led team conducting research on life expectancy said on Thursday it had identified the largest-ever number of genetic markers that are almost entirely new to science. The answer to how long each person will live is partly encoded in their genomes or their genetic material, Xinhua quoted the researchers as saying, who published the …

    July 28, 2017