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Hace 5 días · Now, an analysis of ancient and modern genomes suggests contemporary people’s Neanderthal DNA came from a single, prolonged period of mixing some 47,000 years ago. The findings—released last week as a bioRxiv preprint that has yet to undergo peer review—sharpen the timeline for this critical and mysterious juncture in human history.
Hace 1 día · The concepts of natural selection and selection pressures are of great importance to the fields of medicine and agriculture. It is the action of this phenomenon in connection with random mutations ...
Hace 4 días · natural selection, process that results in the adaptation of an organism to its environment by means of selectively reproducing changes in its genotype, or genetic constitution. A brief treatment of natural selection follows. For full treatment, see evolution: The concept of natural selection.
Hace 5 días · Natural selection is differential reproduction. Demographic and ethnographic, historical and genetic evidence suggest that, over the course of our evolutionary past, members of H. sapiens varied in reproductive success. Selection for emotions and other adaptations underlying intrasexual and intersexual competition should have been ...
Hace 5 días · Population genomic and epigenomic study in a facultatively asexual plant indicates that natural selection can act on the controls of asexual reproduction during range expansion, which in turn ...
Hace 4 días · Natural Born Narco is 347 on the JustWatch Daily Streaming Charts today. The TV show has moved down the charts by -253 places since yesterday. In the United States, it is currently more popular than Fire Country but less popular than Attack on Titan.
Adaptive laboratory evolution provides a real-time record of physiological change. In bacteria adapted to glucose over 40 000 generations, this study finds an apparent increase in enzyme ...
