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Mengzi Ren
Mengzi Ren (MZR) is a fossil of a woman found in a Red Deer Cave in modern-day China. She lived around 14,000 years ago in the Late Pleistocene era. Her genome has similarities to both modern-day East Asian and indigenous American genomes and is believed to be closely related to the East Asian ancestors of indigenous Americans. Her mitochondrial DNA Mitochondrial DNA (mtDNA and mDNA) is the DNA located in the mitochondrion, mitochondria organelles in a eukaryotic cell that converts chemical energy from food into adenosine triphosphate (ATP). Mitochondrial DNA is a small portion of the D ... belongs to a lineage of the M9 haplogroup, which is now extinct. References {{reflist Late Pleistocene Homo sapiens fossils Archaeological discoveries in China ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Deer Cave People
The Red Deer Cave people were a prehistoric population of modern humans known from bones dated to between about 17,830 to c. 11,500 years ago, found in Red Deer Cave (Maludong, ) and Longlin Cave in Yunnan and Guangxi Provinces, in Southwest China. The fossils exhibit a mix of archaic and modern features and were tentatively thought to represent a late survival of an archaic human species, hybridization between Denisovan hominin and modern humans, or alternatively just "an unfortunate overinterpretation and misinterpretation of robust early modern humans, probably with affinities to modern Melanesians". A partial genome sequence in 2022 suggested that, despite their morphologically unusual features, they were modern humans related to contemporary populations in East and Southeast Asia, as well as the Americas. However, this DNA sequence was later brought into question, with the sequence possibly being contaminated by modern human DNA. Evidence shows large deer were cooked in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Before Present
Before Present (BP) or "years before present (YBP)" is a time scale used mainly in archaeology, geology, and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Because the "present" time changes, standard practice is to use 1January 1950 as the commencement date (epoch) of the age scale, with 1950 being labelled as the "standard year". The abbreviation "BP" has been interpreted retrospectively as "Before Physics", which refers to the time before nuclear weapons testing artificially altered the proportion of the carbon isotopes in the atmosphere, which scientists must account for when using radiocarbon dating for dates of origin that may fall after this year. In a convention that is not always observed, many sources restrict the use of BP dates to those produced with radiocarbon dating; the alternative notation "RCYBP" stands for the explicit "radio carbon years before present". Usage The BP scale is s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Pleistocene
The Late Pleistocene is an unofficial Age (geology), age in the international geologic timescale in chronostratigraphy, also known as the Upper Pleistocene from a Stratigraphy, stratigraphic perspective. It is intended to be the fourth division of the Pleistocene Epoch within the ongoing Quaternary Period. It is currently defined as the time between 129,000 and c. 11,700 years ago. The late Pleistocene equates to the proposed Tarantian Age of the geologic time scale, preceded by the officially ratified Chibanian (commonly known as the Middle Pleistocene). The beginning of the Late Pleistocene is the transition between the end of the Penultimate Glacial Period and the beginning of the Last Interglacial around 130,000 years ago (corresponding with the beginning of Marine Isotope Stage 5). The Late Pleistocene ends with the termination of the Younger Dryas, some 10th millennium BC, 11,700 years ago when the Holocene Epoch began. The term Upper Pleistocene is currently in use as a p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitochondrial DNA
Mitochondrial DNA (mtDNA and mDNA) is the DNA located in the mitochondrion, mitochondria organelles in a eukaryotic cell that converts chemical energy from food into adenosine triphosphate (ATP). Mitochondrial DNA is a small portion of the DNA contained in a eukaryotic cell; most of the DNA is in the cell nucleus, and, in plants and algae, the DNA also is found in plastids, such as chloroplasts. Mitochondrial DNA is responsible for coding of 13 essential subunits of the complex oxidative phosphorylation (OXPHOS) system which has a role in cellular energy conversion. Human mitochondrial DNA was the first significant part of the human genome to be sequenced. This sequencing revealed that human mtDNA has 16,569 base pairs and encodes 13 proteins. As in other vertebrates, the human mitochondrial genetic code differs slightly from nuclear DNA. Since animal mtDNA evolves faster than nuclear genetic markers, it represents a mainstay of phylogenetics and evolutionary biology. It als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M9 Haplogroup
M9, M-9 most often refers to: * Beretta M9, a 9 mm pistol M9, M-9 or M09 may refer to: Aviation * Grigorovich M-9, a Russian World War I-era biplane flying boat * Miles M.9 Master, a 1939 British 2-seat monoplane advanced trainer * Motor Sich Airlines, a Ukrainian airline (IATA airline designator: M9) Computers * M9-IX, a short name for the Moscow Internet Exchange * Apple M9, one of the company's series of Apple motion coprocessors Firearms and military equipment * Beretta M9, the formerly standard-issue service pistol for the US Army and other forces * M9M1, a 9mm/.45ACP submachine gun * M-9, the export name for the Chinese missile DF-15 * M9 half-track, a variant of the M2 Half Track * M9 bayonet, a United States military knife * M9 armored combat earthmover, a United States military earthmover * M9 anti-tank rocket launcher, another name for the bazooka * M9 flamethrower, flamethrower, United States * M9 gun director, director used with 90mm anti-aircraft guns * T40/ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homo Sapiens Fossils
''Homo'' () is a genus of great ape (family Hominidae) that emerged from the genus ''Australopithecus'' and encompasses only a single extant species, ''Homo sapiens'' (modern humans), along with a number of extinct species (collectively called archaic humans) classified as either ancestral or closely related to modern humans; these include ''Homo erectus'' and '' Homo neanderthalensis''. The oldest member of the genus is '' Homo habilis'', with records of just over 2 million years ago. ''Homo'', together with the genus ''Paranthropus'', is probably most closely related to the species ''Australopithecus africanus'' within ''Australopithecus''.'''' The closest living relatives of ''Homo'' are of the genus '' Pan'' (chimpanzees and bonobos), with the ancestors of ''Pan'' and ''Homo'' estimated to have diverged around 5.7–11 million years ago during the Late Miocene. ''H. erectus'' appeared about 2 million years ago and spread throughout Africa (debatably as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
