If you looked up 66 million years ago you might have seen, for a split second, a bright light as a mountain-sized asteroid burned through the atmosphere and smashed into Earth. It was springtime and the literal end of an ...
Paleontology & Fossils
Sep 16, 2023
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The gene editing technique CRISPR/Cas9 has allowed researchers to make precise and impactful changes to an organism's DNA to fix mutations that cause genetic disease. However, the CRISPR/Cas9 method can also result in unintended ...
Biotechnology
Sep 15, 2023
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58
Black-winged Monarchs (Monarcha frater) are songbirds that live in the rainforests of New Guinea and northern Australia. They feed on insects and belong to the same bird family, Monarchidae, as flycatchers and magpie-larks.
Plants & Animals
Aug 31, 2023
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Rumors that there are big cats in Britain stubbornly keep cropping up. The thought of a large predator lurking in the rural landscapes of Britain is an exciting one.
Plants & Animals
Aug 25, 2023
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Early colonial settlers likely survived the harsh frontier conditions of 17th-century Delaware because they banded as family units to work alongside enslaved African descendants and European indentured servants, according ...
Archaeology
Aug 2, 2023
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Who lived at Machu Picchu at its height? A new study, published in Science Advances, used ancient DNA to find out for the first time where workers buried more than 500 years ago came from within the lost Inca Empire.
Archaeology
Jul 26, 2023
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712
Scientists at McMaster University and India's University of Delhi have discovered and isolated the first live culture of the drug-resistant pathogen Candida auris from an animal, specifically from the ear canals of stray ...
Cell & Microbiology
Jul 7, 2023
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61
An international team of biologists, geneticists, anthropologists and biochemists has found, through genetic analysis, that the migration patterns of ancient Mexican civilizations were much more complex than previously thought. ...
On farms, spiders are important predators who control insect populations, including pests that can damage crops.
Plants & Animals
Apr 18, 2023
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10
A team of environmental scientists at the University of Auckland and Manaaki Whenua—Landcare Research, both in New Zealand, has found that one of the reasons for the declining population of the endangered kākāpō is a ...
Genetic testing allows the genetic diagnosis of vulnerabilities to inherit diseases, and can also be used to determine a person's ancestry. Normally, every person carries two copies of every gene, one inherited from their mother, one inherited from their father. The human genome is believed to contain around 20,000 - 25,000 genes. In addition to studying chromosomes to the level of individual genes, genetic testing in a broader sense includes biochemical tests for the possible presence of genetic diseases, or mutant forms of genes associated with increased risk of developing genetic disorders. Genetic testing identifies changes in chromosomes, genes, or proteins. Most of the time, testing is used to find changes that are associated with inherited disorders. The results of a genetic test can confirm or rule out a suspected genetic condition or help determine a person's chance of developing or passing on a genetic disorder. Several hundred genetic tests are currently in use, and more are being developed.
Since genetic testing may open up ethical or psychological problems, genetic testing is often accompanied by genetic counseling.
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