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
April 28, 2026
Apr. 28, 2026 A new study suggests Neanderthals didn’t go extinct simply because of climate change or competition with Homo sapiens. Instead, the key difference may have been social connectivity—Homo sapiens formed stronger, more flexible networks that helped ...
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Apr. 23, 2026 A newly confirmed mass grave in ancient Jordan offers chilling insight into one of history’s first pandemics. Hundreds of plague victims were buried within days, revealing how the Plague of Justinian devastated entire communities. The findings ...
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Apr. 15, 2026 A rare fossil discovery is shedding light on the “missing years” of early sponge evolution. Scientists found a 550-million-year-old sponge that likely lacked hard skeletal parts, explaining why ...
Feb. 25, 2026 A lost cache of 250-million-year-old fossils from Australia has rewritten part of the story of life after Earth’s worst mass extinction. Instead of a single marine amphibian species, researchers ...
Feb. 21, 2026 Deep inside a Romanian ice cave, locked away in a 5,000-year-old layer of ice, scientists have uncovered a bacterium with a startling secret: it’s resistant to many modern antibiotics. Despite predating the antibiotic era, this cold-loving microbe ...
Feb. 17, 2026 An Ice Age double burial in Italy has yielded a stunning genetic revelation. DNA from a mother and daughter who lived over 12,000 years ago shows that the younger had a rare inherited growth disorder, confirmed through mutations in a key bone-growth ...
Feb. 12, 2026 Long before agriculture, humans were transforming Europe’s wild landscapes. Advanced simulations show that hunting and fire use by Neanderthals and Mesolithic hunter-gatherers reshaped forests and ...
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Apr. 27, 2026 A newly discovered prehistoric mammal may hold clues to how life survived the dinosaur-killing extinction. The tiny species, Cimolodon desosai, lived 75 million years ago and had traits—like a ...
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Apr. 24, 2026 A long-standing mystery in southern Africa’s fossil record is beginning to unravel. After massive lava flows 182 million years ago seemed to erase evidence of dinosaurs in the region, scientists ...
Apr. 23, 2026 A fresh mystery is unfolding inside Egypt’s pyramids. Researchers have discovered two hidden air-filled voids lurking behind the smooth eastern face of the Menkaure pyramid—an area long suspected ...
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Apr. 23, 2026 A remarkably preserved, mummified reptile from 289 million years ago is rewriting what we know about how animals first breathed on land. This tiny creature, Captorhinus aguti, reveals the earliest ...
Apr. 22, 2026 Ancient DNA from a tomb near Paris reveals a shocking prehistoric reset: one population vanished and was replaced by newcomers from the south. The two groups show no genetic connection, signaling a ...
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