Video Experimental Relacionado
Updated: Feb 25, 2026
06:18
Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains
Published on: November 30, 2021
5.2K
Una presencia moderna temprana en Sumatra hace 73.000-63.000 años
K E Westaway1, J Louys2, R Due Awe3
1Department of Environmental Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales 2109, Australia.
Nature
|August 10, 2017
Resumen
Los humanos anatómicamente modernos (AMH) ocuparon Sumatra
Área de la Ciencia:
- Paleoantropología
- Arqueología
- Geocronología
Sus antecedentes:
- Los datos genéticos sugieren que los humanos anatómicamente modernos (AMH) se dispersaron fuera de África antes de lo que indica la evidencia arqueológica.
- Las afirmaciones anteriores de la presencia temprana de AMH en la isla del sudeste asiático (ISEA) antes de hace 60,000 años carecían de evidencia esquelética robusta y datación precisa.
- El sitio de la cueva Lida Ajer en Sumatra, que contiene dientes humanos fósiles, ha sido históricamente pasado por alto debido a la taxonomía incierta y la edad del depósito.
Videos de Conceptos Relacionados
02:31Synteny and Evolution
3.9K
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
3.9K
01:24Biodiversity and Human Values
17.4K
Human civilization relies on biodiversity in many ways. Sudden changes in species biodiversity result in environmental changes that can modify weather patterns and therefore human civilizations.
17.4K
02:56The Fossil Record
27.6K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
27.6K
02:35What is Evolutionary History?
43.9K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
43.9K
01:07Speciation Rates
23.0K
Overview
23.0K
01:24Eukaryotic Evolution
42.7K
The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
42.7K