Ví dụ về việc sử dụng Molecular clock trong Tiếng anh và bản dịch của chúng sang Tiếng việt
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This discrepancy between the fossil record and the molecular clock has been a huge puzzle.
Molecular clocks have been used to suggest an origin in the Pacific in the Paleocene.
This means that the researchers could not use the molecular clock method to try and gauge the origin of the virus.
Molecular clock estimates suggest that lemurs and the lorisoids diverged in Africa during the Paleocene, about 62 mya.
In their PNAS study,the investigators also used a“molecular clock” of rice genes to see when rice evolved.
Molecular clock estimates indicate that lemurs and the lorisoids diverged in Africa during the Paleocene, approximately 62 mya.
These fossils are consistent with a molecular clock study that calculated that this clade diverged about 1500 Ma.
Molecular clock studies suggest that the primate branch may be even older, originating in the mid-Cretaceous period around 85 mya.[5].
In fact, every cell in the human body has its own molecular clock, which is capable of generating a daily rise and fall in the number of many proteins the body….
As sequences diverge and change during the process of evolution,these differences between sequences can be used as a molecular clock to calculate the evolutionary distance between them.
They also provided the first molecular clock estimate of modern human-African ape divergence, dating the split to only around five million years ago.
We know fungus was around when the first plants began to emerge around 500-600 million years ago,but the fungal molecular clock had already suggested these life forms should have been around sooner.
Using a"molecular clock" that estimates the rate of mutations in the genome, the researchers determined when each species of Amaurobioides split off from the main branch.
For their investigation, the researchers developed an unprecedentedly accurate“molecular clock,” a technique that looks at the rate at which mutations build up in given stretches of DNA over time….
Evolutionary biologists use molecular clocks to reconstruct family trees, follow lineage splitting and find common ancestors of different strains of viruses and other organisms.
Once the researchers had gauged the fossils' age at 1.047 billion years,they plugged that figure into a“molecular clock,” a computer model used to calculate evolutionary events based on rates of genetic mutations.
Prof. Worobey and his team used their molecular clock to reconstruct the origins of the 1918 pandemic virus, the classic swine flu and the postpandemic seasonal H1N1 flu virus lineage that circulated between 1918 and 1957….
Some of the key topics that spurred development of the field have been the evolution of enzyme function,the use of nucleic acid divergence as a"molecular clock" to study species divergence, and the origin of noncoding DNA.
Primates had appeared by 55 Ma[citation needed], although the molecular clock and new paleontological finds state that they may have existed as early as the Late Cretaceous, 90 Ma.
Some of the key topics that spurred development of the field have been the evolution of enzyme function,the use of nucleic acid divergence as a“molecular clock” to study species divergence, and the origin of noncoding DNA.
Some molecular clock data, however, suggest modern rodents(members of the order Rodentia) had appeared in the late Cretaceous, although other molecular divergence estimations are in agreement with the fossil record.
Some of the key topics that spurred development of the field have been the evolution of enzyme function,the use of nucleic acid divergence as a"molecular clock" to study species divergence, and the origin of non-functional or junk DNA.
The findings also provide evidence in support of a theory explaining the long-standing mismatch between fossil evidence of prehistoric life, and the record provided by biomolecular data,known as the"molecular clock".
By combining data from all availablesources scientists are able to construct“molecular clocks”, based on the idea that the number of differences in genetic code between different species is proportional to the time since they shared a common ancestor.
Li(2005) wrote that"the existence of a so highly derived Angiosperm in the Early Cretaceous suggests that Angiosperms should have originated much earlier,maybe back to 280 mya as the molecular clock studies suggested".
These"molecular clocks", however, are fallible, and provide only approximate timing: for example, they are not sufficiently precise and reliable for estimating when the groups that feature in the Cambrian explosion first evolved,[24] and estimates produced by different techniques may vary by a factor of two.
The dates assigned to mitochondrial Eve(tens to hundreds of thousands of years) by evolutionists don't match the biblical chronology, however,this is because they are are based upon‘molecular clock' assumptions, which were calibrated by evolutionary beliefs about when certain evolutionary events occurred, supposedly millions of years ago.
We now know that the molecular circadian clock can function within a single cell; i.e., it is cell-autonomous.
It is now known that the molecular circadian clock can function within a single cell; i.e., it is cell-autonomous.