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Search results for “Evolution”

1,000+ results for "Evolution"

Study shakes up sloth family tree

Two studies published in Nature Ecology & Evolution challenge long-standing sloth classification, revealing new relationships between ancient ground sloths and modern species. The findings use proteins in fossils to map an entire lineage for the first time, rewriting our understanding of sloth evolution.

SourceUniversity of Chicago·JournalNature Ecology & Evolution·DateJun 6, 2019

The history of humanity in your face

Researchers reveal how the modern human face evolved over four million years, influenced by dietary changes, tool use, and social interactions. The study's findings suggest that the face's shape and features reflect our species' adaptability to different environments and cultural contexts.

SourceArizona State University·JournalNature Ecology & Evolution·DateApr 15, 2019

UTA biologist shows new insights into chromosome evolution, venom regulation in snakes

Researchers have made significant breakthroughs in understanding snake genomes, including the evolution of venom genes, dosage compensation mechanisms, and sex determination systems. The study provides a comprehensive genomic context for these complex biological processes, offering new insights into the unique adaptations of snakes.

SourceUniversity of Texas at Arlington·JournalGenome Research·DateMar 29, 2019

Nature hits rewind

New research by McMaster behavioural scientists reveals evolution can work backwards to benefit related members of the same group. Selfless traits like sharing food and keeping watch are mathematically equivalent to decreased evolution of individually beneficial traits.

SourceMcMaster University·JournalJournal of Evolutionary Biology·DateMar 19, 2019

Fossil illuminates hagfish evolution

A new fossil discovery reveals defining characteristics of hagfish appeared before the Cretaceous period, resolving a longstanding debate on their evolutionary position. The study suggests that hagfish and lampreys form a distinct clade, implying that living jawless vertebrates may not be as primitive as initially thought.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateJan 21, 2019

Double the stress slows down evolution

Bacteria adapt more slowly and less efficiently when exposed to two stress factors, leading to smaller population sizes. This affects the evolution of antibiotic resistance, as bacteria are less able to protect themselves from predators, resulting in a stronger influence on their survival rate.

SourceMax-Planck-Gesellschaft·JournalNature Ecology & Evolution·DateDec 7, 2018

Replaying the tape of life: Is it possible?

A review explores the complexity of evolution's predictability, revealing a mix of contingency and determinism in evolutionary change. The study analyzed various empirical studies to characterize repeatability and contingency in evolution, finding that there is no easy answer to whether history affects the repeatability of evolution.

How cancer-causing papillomaviruses evolved

Researchers discovered that cancer-causing papillomaviruses diverged from their common ancestors half a million years ago, coinciding with the split between Neanderthals and modern humans. The viruses adapted to specific host ecosystems and then coevolved with primates for at least 40 million years.

SourcePLOS·JournalPLOS Pathogens·DateNov 1, 2018

A curious branch of plankton evolution

A study of Truncorotalia fossils found rapid shell shape changes 5.1 million years ago, potentially observing quantum evolution at a species level. This challenges previous theories of gradual evolution in planktonic forams.

SourceCell Press·JournaliScience·DateOct 17, 2018

Drier, less predictable environment may have spurred human evolution

Researchers found evidence of a variable but progressively drying climate coincides with a major shift in stone-tool-making abilities and the appearance of modern Homo sapiens. A continuous environmental context was provided for the diverse archeological evidence recovered from nearby localities in the rift valley basins of southern Ke...

SourceUniversity of Arizona·JournalProceedings of the National Academy of Sciences·DateOct 8, 2018

The spark that created life

Researchers at Monash University have discovered structural capacitance elements in mutated proteins associated with human diseases, particularly cancers. These elements enable mutations to trigger a gain-of-function, shedding light on protein evolution and the engineering of highly evolvable proteins.

SourceMonash University·JournalJournal of Molecular Biology·DateSep 12, 2018

Study confirms truth behind 'Darwin's moth'

Researchers found that pale peppered moths are more camouflaged against lichen-covered tree bark than dark moths, making them less likely to be eaten by birds in unpolluted woodland. This supports Darwin's theory of evolution by natural selection and provides key evidence for the evolutionary advantage of camouflage.

SourceUniversity of Exeter·JournalCommunications Biology·DateAug 17, 2018