Not just Neanderthals: Ghost lineage in Africa left its mark on our DNA
Some group with no modern descendants contributed a lot to our genomes. O recorte ajuda a contextualizar a pauta dentro de Tech.
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How an embryo draws the line between body and germline
Every embryo of an organism that reproduces sexually faces an early and consequential decision: which of its cell lineages will make up the mortal body, and which will become the germline, the lineage that eventually makes eggs or sperm and carries genetic information to the next
Scientists found evolution repeating itself in the Galápagos Islands
More than 150 years after Darwin’s finches helped reshape biology, Galápagos plants are exposing another evolutionary surprise. Giant daisies repeatedly developed similar heat-tolerant leaf shapes, but each lineage used a different combination of genes. Researchers also found maj
Ancient ape fossil in Egypt challenges the story of human origins
A newly identified fossil ape from northern Egypt is reshaping ideas about where the ancestors of modern apes first emerged. Analyses place it closer to living apes than any known East African species of the same age, pointing to North Africa and the Middle East as a possible bir
When mothers make the winners: How alpha female lineages dominate hyena clans
In mammals, males are usually stronger and more competitive than females. Males also show greater inequality in reproductive success—the number of offspring they produce—than females. In spotted hyenas, the opposite is true: Reproductive inequality is greater among females than m
Scientists just discovered a lost branch of Australia’s marsupials
Fossils from Queensland suggest a newly recognized marsupial order may have survived in Australia for around 35 million years, rewriting part of the story of how the continent's unique mammals evolved. The discovery challenges the idea that Australia's marsupials all came from a
How far will Japan go to preserve the 2,600-year-old male imperial bloodline?
Japan's imperial family is running out of male heirs, and a debate over how to preserve the hereditary lineage that has continued unbroken for centuries is dividing the nation. Meanwhile, Emperor Naruhito and Empress Masako wrapped up their two-week trip to Europe, and Japan took
Primate brains might have evolved to 'catch up' with larger bodies, but then kept growing
A new analysis supports the previously overlooked "brain lag" hypothesis—the idea that, in some primate lineages, the evolution of larger body size preceded the evolution of larger brain size—while also building on that hypothesis by suggesting that some lineages' brain sizes the
Newfound family ties link Scythian elite burials across the Eurasian steppe
A new ancient DNA study published in Science Advances provides evidence that political power among Scythian elites may have been inherited through family lineages that extended across multiple burial sites. By combining archaeology, anthropology and genetics, the new study offers