Reference Terms
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Introduction to genetics
Genetics is the study of how living things receive common traits from previous generations. These traits are described by the genetic information carried by a molecule called DNA. The instructions for constructing and operating an organism are contained in the organism's DNA. Every living thing on earth has DNA in its cells.
A gene is a hereditary unit consisting of DNA that occupies a spot on a chromosome and determines a characteristic in an organism.
Genes are passed on from parent to child and are believed by many to be an important part of what decides looks and behavior.
Darwin’s theory of natural selection laid the groundwork for evolutionary theory. However, it was the emergence of the field of genetics, pioneered by Gregor Mendel (1822-1884), that provided the missing information on how evolution works in practice. Mendel’s experiments with peas led him to realise that heredity in sexual reproduction works by the mixing of separate factors, not by the blending of inherited characters. This combination of Darwin's theory and our current understanding of heredity led to the birth of the scientific area called "population genetics."
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Fossils & Ruins News
October 27, 2025
Oct. 26, 2025 — Dinosaurs weren’t dying out before the asteroid hit—they were thriving in vibrant, diverse habitats across North America. Fossil evidence from New Mexico shows that distinct “bioprovinces” of dinosaurs existed until the very end. Their ...
Oct. 26, 2025 — New research shows that hippos lived in central Europe tens of thousands of years longer than previously thought. Ancient DNA and radiocarbon dating confirm they survived in Germany’s Upper Rhine Graben during a milder Ice Age phase. Closely ...
Oct. 26, 2025 — Researchers have uncovered microbial evidence in the remains of Napoleon’s soldiers from the 1812 Russian retreat. Genetic analysis revealed pathogens behind paratyphoid and relapsing fever, diseases likely contributing to the army’s massive ...
Oct. 16, 2025 — Long before humans built cities or wrote words, our ancestors may have faced a hidden threat that shaped who we became. Scientists studying ancient teeth found that early humans, great apes, and even Neanderthals were exposed to lead millions of ...
Oct. 11, 2025 — Researchers have unearthed South America’s first amber deposits containing ancient insects in an Ecuadorian quarry, offering a rare 112-million-year-old glimpse into life on the supercontinent ...
Oct. 7, 2025 — Ancient humans crossing the Bering Strait into the Americas carried more than tools and determination—they also carried a genetic legacy from Denisovans, an extinct human relative. A new study reveals that a mysterious gene called MUC19, inherited ...
Sep. 19, 2025 — From the wreck of the royal Danish-Norwegian flagship Gribshunden, archaeologists have uncovered a rare glimpse into the naval power of the late Middle Ages. This warship, lost in 1495, carried an arsenal of small guns designed for close-range ...
Aug. 30, 2025 — Scientists have finally uncovered direct genetic evidence of Yersinia pestis — the bacterium behind the Plague of Justinian — in a mass grave in Jerash, Jordan. This long-sought discovery resolves a centuries-old debate, confirming that the ...
Aug. 16, 2025 — Chemical evidence from a stalagmite in Mexico has revealed that the Classic Maya civilization’s decline coincided with repeated severe wet-season droughts, including one that lasted 13 years. These ...
Aug. 13, 2025 — Advanced computer modeling suggests that by 2080, waves driven by sea level rise could flood Ahu Tongariki and up to 51 cultural treasures on Rapa Nui. The findings emphasize the urgent need for protective measures to preserve the island’s ...
Aug. 9, 2025 — Over 300 million years ago, Illinois teemed with life in tropical swamps and seas, now preserved at the famous Mazon Creek fossil site. Researchers from the University of Missouri and geologist ...
July 11, 2025 — Scientists have uncovered DNA from 214 ancient pathogens in prehistoric humans, including the oldest known evidence of plague. The findings show zoonotic diseases began spreading around 6,500 years ...
Latest Headlines
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Oct. 24, 2025 — Scientists have unveiled Khankhuuluu, a new Mongolian dinosaur species that predates and closely resembles early Tyrannosaurs. With its long snout, small horns, and lean build, it represents a ...
Oct. 12, 2025 — Researchers in Italy discovered 400,000-year-old evidence that ancient humans butchered elephants for food and tools. At the Casal Lumbroso site near Rome, they found hundreds of bones and stone ...
Oct. 12, 2025 — New research along Turkey’s Ayvalık coast reveals a once-submerged land bridge that may have helped early humans cross from Anatolia into Europe. Archaeologists uncovered 138 Paleolithic tools ...
Oct. 11, 2025 — Archaeologists in Saudi Arabia discovered over 170 ancient rock engravings that may be among the earliest monumental artworks in the region. Created between 12,800 and 11,400 years ago, the massive ...
Oct. 8, 2025 — Researchers confirmed that Rapa Nui’s moai statues could “walk” upright using a rocking motion, aided by rope and just a few people. Experiments with replicas and 3D models revealed design ...
Oct. 6, 2025 — A sweeping new geoarchaeological study has revealed how Egypt’s famed Karnak Temple complex rose from an island amid Nile floods to become one of the ancient world’s most enduring sacred centers. ...
Oct. 5, 2025 — Researchers in Alberta uncovered a fossil fish that rewrites the evolutionary history of otophysans, which today dominate freshwater ecosystems. The ...
Oct. 3, 2025 — A strange Jurassic lizard discovered on Scotland’s Isle of Skye is shaking up what we know about snake evolution. Named Breugnathair elgolensis, the “false snake of Elgol” combined hook-like, ...
Sep. 29, 2025 — Scientists have named a new ichthyosaur, Eurhinosaurus mistelgauensis, from fossils found in Mistelgau, Germany. The marine reptile had a dramatic overbite similar to swordfish and unique skeletal ...
Sep. 28, 2025 — Ancient copper smelters may have accidentally set the stage for the Iron Age. At a 3,000-year-old workshop in Georgia, researchers discovered that metalworkers were using iron oxide not to smelt iron ...