(Phys.org)—This is the second part of a two-part story about the forensic investigation of the Somerton Man. Read "Part 1: History and Code" here.
A genetic analysis of bone fragments unearthed at an archaeological site in central Germany shows conclusively that modern humans—Homo sapiens—had already reached Northern Europe 45,000 years ago, overlapping with Neanderthals ...
Archaeology
Jan 31, 2024
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564
The length of a specific generation can tell us a lot about the biology and social organization of humans. Now, researchers at Indiana University can determine the average age that women and men had children throughout human ...
Evolution
Jan 6, 2023
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351
A new study by Yale ichthyologists provides a clearer picture of species diversity among black basses—one of the most cherished and economically important lineages of freshwater gamefish. Their findings can help guide the ...
Evolution
Jun 6, 2022
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600
There are many genes, or at least markers of one sort or another within our DNA sequences, that have been associated with height. By some estimates the number could be thousands. However, finding those select genes that have ...
A team of researchers affiliated with several institutions in Japan has succeeded in cultivating samples of Lokiarchaea in a special tank in their lab. They have published a paper describing their work on the bioRxiv preprint ...
(Phys.org)—A large international team of researchers has found that Neolithic hunter-gatherers living in several parts of Europe interbred with farmers from the Near East. In their paper published in the journal Nature, ...
A team of researchers with members from several institutions in India has found evidence of ostrich relatives living in India as far back as 25,000 years ago. In their paper uploaded to the open access site PLOS ONE, the ...
(Phys.org)—A team of researchers with members from Germany, Canada and Russia has conducted a DNA analysis of two molars found in the Denisova caves in Siberia shedding more light on the origins of the Denisovans—a hominin ...
(Phys.org) —A team with members from several institutions in the U.S. has finally set to rest the mystery of how the bottle gourd found its way to the Americas. In their paper published in Proceedings of the National Academy ...
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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