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The Grayness of the Origin of Life [PDF]

open access: yesLife, 2021
In the search for life beyond Earth, distinguishing the living from the non-living is paramount. However, this distinction is often elusive, as the origin of life is likely a stepwise evolutionary process, not a singular event. Regardless of the favored origin of life model, an inherent “grayness” blurs the theorized threshold defining life.
Hillary H. Smith   +15 more
openaire   +5 more sources

Origins of Life: Chemistry and Evolution [PDF]

open access: yes, 2023
Our understanding of the origins of life will be enhanced if models and their predictions are clearly understood and explicitly articulated. Here we outline two distinct models that are currently used to explain the origins of life.
Gary, Schuster   +7 more
core   +1 more source

International Scientific Conference „Sustainable fruit and berry cultivation“ : the book of abstracts [PDF]

open access: yes, 2021
19 November 2021 Polli Horticultural Research Centre Institute of Agricultural and Environmental Sciences Estonian University of Life Sciences.Dear conference participants and guests, As director of the Institute of Agricultural and Environmental ...
Estonian University of Life Sciences
core   +1 more source

THE ORIGIN OF LIFE [PDF]

open access: yesAnnual Review of Genetics, 1974
The origin of life is in a sense a genetic problem, for, as H. J. Muller pointed out many years ago, the essential attribute that identifies living matter is its capacity to replicate itself and its variants (1). Because this uniquely biological property has its physical basis in proteins and nucleic acids, the goal of modern work on the origin of life
Horowitz, N. H., Hubbard, Jerry S.
openaire   +3 more sources

Evolution of Realistic Organic Mixtures for the Origins of Life through Wet–Dry Cycling

open access: yesSci, 2022
One of the challenges in understanding chemical evolution is the large number of starting organics and environments that were plausible on early Earth. Starting with realistic organic mixtures and using chemical analyses that are not biologically biased,
Kiernan Foster   +4 more
doaj   +1 more source

Native Chemical Computation. A Generic Application of Oscillating Chemistry Illustrated With the Belousov-Zhabotinsky Reaction. A Review

open access: yesFrontiers in Chemistry, 2021
Computing with molecules is at the center of complex natural phenomena, where the information contained in ordered sequences of molecules is used to implement functionalities of synthesized materials or to interpret the environment, as in Biology.
Marta Dueñas-Díez   +3 more
doaj   +1 more source

Ancient Mitogenomes Reveal the Origins and Genetic Structure of the Neolithic Shimao Population in Northern China

open access: yesFrontiers in Genetics, 2022
Shimao City is considered an important political and religious center during the Late Neolithic Longshan period of the Middle Yellow River basin. The genetic history and population dynamics among the Shimao and other ancient populations, especially the ...
Jiayang Xue   +27 more
doaj   +1 more source

SEM Analyses of Fossilized Chondrocytes in the Extinct Birds Yanornis and Confuciusornis: Insights on Taphonomy and Modes of Preservation in the Jehol Biota

open access: yesFrontiers in Earth Science, 2021
Calcified cartilage is a vertebrate tissue that has unique characteristics, such as a high percentage of calcification, avascularity and cells with apparently delayed autolytic processes after death. All of these factors suggest that fossilized cartilage
Alida M. Bailleul   +3 more
doaj   +1 more source

Association between cord blood metabolites in tryptophan pathway and childhood risk of autism spectrum disorder and attention-deficit hyperactivity disorder

open access: yesTranslational Psychiatry, 2022
Alterations in tryptophan and serotonin have been implicated in various mental disorders; but studies are limited on child neurodevelopmental disabilities such as autism spectrum disorder (ASD) and attention-deficit hyperactivity disorder (ADHD).
Ramkripa Raghavan   +7 more
doaj   +1 more source

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