Results 1 to 10 of about 361,547 (333)

Integrated genomic and fossil evidence illuminates life’s early evolution and eukaryote origins

Nature Ecology & Evolution, 2018
Establishing a unified timescale for the early evolution of Earth and life is challenging and mired in controversy because of the paucity of fossil evidence, the difficulty of interpreting it and dispute over the deepest branching relationships in the ...
Holly C. Betts, Mark N. Puttick, James W. Clark, T. Williams, P. Donoghue, D. Pisani   +5 more
semanticscholar   +1 more source

The primordial tRNA acceptor stem code from theoretical minimal RNA ring clusters

BMC Genetics, 2020
Background Theoretical minimal RNA rings code by design over the shortest length once for each of the 20 amino acids, a start and a stop codon, and form stem-loop hairpins. This defines at most 25 RNA rings of 22 nucleotides. As a group, RNA rings mimick
Jacques Demongeot, Hervé Seligmann
doaj   +1 more source

pH Oscillating System for Molecular Computation as a Chemical Turing Machine

ACS Omega, 2022
Thomas C. Draper, Eszter Poros-Tarcali, Juan Pérez-Mercader   +2 more
doaj   +1 more source

Gestational DNA methylation age as a marker for fetal development and birth outcomes: findings from the Boston Birth Cohort

Clinical Epigenetics
Background Gestational DNA methylation age (GAmAge) has been developed and validated in European ancestry samples. Its applicability to other ethnicities and associations with fetal stress and newborn phenotypes such as inflammation markers are still to ...
Anat Yaskolka Meir, Maria Jimena Gutierrez, Xiumei Hong, Guoying Wang, Xiaobin Wang, Liming Liang   +5 more
doaj   +1 more source

Newborn DNA methylation age differentiates long-term weight trajectories: the Boston Birth Cohort

BMC Medicine
Background Gestational age (GEAA) estimated by newborn DNA methylation (GAmAge) is associated with maternal prenatal exposures and immediate birth outcomes. However, the association of GAmAge with long-term overweight or obesity (OWO) trajectories is yet
Anat Yaskolka Meir, Guoying Wang, Xiumei Hong, Frank B. Hu, Xiaobin Wang, Liming Liang   +5 more
doaj   +1 more source

How do Nucleotides Adsorb Onto Clays?

Life, 2018
Adsorption of prebiotic building blocks is proposed to have played a role in the emergence of life on Earth. The experimental and theoretical study of this phenomenon should be guided by our knowledge of the geochemistry of the habitable early Earth ...
Ulysse Pedreira-Segade, Jihua Hao, Angelina Razafitianamaharavo, Manuel Pelletier, Virginie Marry, Sébastien Le Crom, Laurent J. Michot, Isabelle Daniel   +7 more
doaj   +1 more source

Detection of Biological Bricks in Space. The Case of Adenine in Silica Aerogel

Life, 2019
Space missions using probes to return dust samples are becoming more frequent. Dust collectors made of silica aerogel blocks are used to trap and bring back extraterrestrial particles for analysis.
Aline Percot, Emilie-Laure Zins, Amélie Al Araji, Anh-Tu Ngo, Jacques Vergne, Makoto Tabata, Akihiko Yamagishi, Marie-Christine Maurel   +7 more
doaj   +1 more source

Chemoadaptive Polymeric Assemblies by Integrated Chemical Feedback in Self-Assembled Synthetic Protocells

ACS Central Science, 2021
Samuel Pearce, Juan Perez-Mercader
doaj   +1 more source

Entangled lives: Implications of the developmental origins of health and disease hypothesis for bioarchaeology and the life course.

American Journal of Physical Anthropology, 2015
Epidemiological research since the 1980s has highlighted the consequences of early life adversity, particularly during gestation and early infancy, for adult health (the "Barker hypothesis").
R. Gowland
semanticscholar   +1 more source

Darwin on “The Origination of Life”

Nature, 1874
n ...
openaire   +2 more sources