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Human genome
The human genome is the genome of Homo sapiens. It is made up of 23 chromosome pairs with a total of about 3 billion DNA base pairs. There are 24 distinct human chromosomes: 22 autosomal chromosomes, plus the sex-determining X and Y chromosomes. Chromosomes 1-22 are numbered roughly in order of decreasing size. Somatic cells usually have one copy of chromosomes 1-22 from each parent, plus an X chromosome from the mother, and either an X or Y chromosome from the father, for a total of 46. There are an estimated 20,000-25,000 human protein-coding genes. The estimate of the number of human genes has been repeatedly revised down from initial predictions of 100,000 or more as genome sequence quality and gene finding methods have improved, and could continue to drop further.
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Health & Medicine News
June 9, 2025
June 9, 2025 — A rare genetic disorder called Werner syndrome causes premature aging and devastating health complications from an early age, yet treatment options have been lacking. New hope emerges from Chiba University, where researchers conducted the first ...
June 9, 2025 — A revolutionary STI test developed by UK-based Linear Diagnostics is on track to dramatically reduce the time it takes to detect infections like gonorrhea and chlamydia. Built on ultra-fast EXPAR DNA amplification technology, the platform can ...
June 8, 2025 — Genetic research in Sweden has unveiled three new gene variants that dramatically increase the risk of venous blood clots, sometimes by up to 180%. These discoveries build on existing knowledge of Factor V Leiden and suggest that genetics plays a ...
June 7, 2025 — Cannabis use among older Americans has climbed dramatically, with 7% of adults 65 and older now reporting recent use. This rise isn't just in numbers but also in diversity older users today are more likely to be women, college-educated, and ...
June 7, 2025 — A powerful new discovery reveals that Nup98 a protein once thought to only ferry molecules through the nucleus plays a vital role in safeguarding the most vulnerable areas of DNA. By forming droplet-like 'bubbles' around damaged DNA within dense ...
June 7, 2025 — New research reveals a surprising downside to calorie-cutting diets: a link to higher levels of depressive symptoms, especially in men and those who are overweight. Despite popular beliefs that healthy eating boosts mental wellness, real-life ...
June 6, 2025 — A diabetes drug may soon double as a treatment for liver disease. Dapagliflozin, an SGLT-2 inhibitor typically used for type 2 diabetes, significantly improved liver inflammation and scarring in patients with metabolic dysfunction-associated ...
June 3, 2025 — A new type of mRNA vaccine is more scalable and adaptable to continuously evolving viruses such as SARS-CoV-2 and H5N1, according to a new ...
June 3, 2025 — Using a newly devised, three-dimensional model to study the regeneration of nerve tissue in the nose, researchers have discovered that one type of stem cell thought to be dormant may play a more significant role in preserving the sense of smell than ...
June 2, 2025 — A trial of an interactive game that trains people to alter their brain waves has shown promise as a treatment for nerve pain -- offering hope for a new generation of drug-free ...
June 2, 2025 — Researchers have synthesized a new compound called infuzide that shows activity against resistant strains of ...
June 3, 2025 — To satisfy the seafood needs of billions of people, offering them access to a more biodiverse array of fish creates opportunities to mix-and-match species to obtain better nutrition from smaller ...
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June 3, 2025 — A new study found exposure to specific tiny particles in air pollution during pregnancy are associated with increased risk of various negative birth ...
June 3, 2025 — Scientists have discovered how pancreatic cancer cells thrive in the lungs or liver, environments that are as distinct to cells as the ocean and desert are to animals. The spread of cancer cells to ...
June 3, 2025 — According to a recent study, in patients with frontotemporal dementia (FTD), epileptic seizures are significantly more common than previously known. ...
June 3, 2025 — Eating a colorful variety of flavonoid-rich foods like tea, berries, dark chocolate, and apples may significantly lower your risk of chronic diseases ...
June 3, 2025 — Researchers asked patients, some of whom had experienced lower back pain for up to 40 years, if being in nature helped them coped better with their ...
June 3, 2025 — The biosynthesis of the great variety of natural plant products has not yet been elucidated for many medically interesting substances. In a new ...
June 3, 2025 — As psychedelics gain traction as potential treatments for mental health disorders, an international study stands to improve the rigor and reliability of clinical ...
June 3, 2025 — A new study shows how person-to-person variation in antibody immunity plays a key role in shaping which influenza (flu) strains dominate in a ...
June 2, 2025 — Researchers have identified a gene that plays a key role in prostate cancer cells that have transitioned to a more aggressive, treatment-resistant form. The gene can be indirectly targeted with an ...
June 2, 2025 — Marijuana use among older adults in the US has reached a new high, with 7 percent of adults aged 65 and over who report using it in the past month, according to a recent ...