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A strip of eight PCR tubes, each containing a 100 μL reaction mixture Placing a strip of eight PCR tubes into a thermal cycler. The polymerase chain reaction (PCR) is a method widely used to make millions to billions of copies of a specific DNA sample rapidly, allowing scientists to amplify a very small sample of DNA (or a part of it) sufficiently to enable detailed study.
TypeRacer was created by programmer Alex Epshteyn, using the OpenSocial application programming interface (API) and the Google Web Toolkit. [1] Epshteyn is a former intern at Google and graduate of the University of Massachusetts Amherst with a Master's degree in computer science. [2]
Researchers have investigated the relationship between race and genetics as part of efforts to understand how biology may or may not contribute to human racial categorization. Today, the consensus among scientists is that race is a social construct, and that using it as a proxy for genetic differences among populations is misleading. [1] [2]
Words per minute, commonly abbreviated as WPM (sometimes lowercased as wpm), is a measure of words processed in a minute, often used as a measurement of the speed of typing, reading or Morse code sending and receiving.
In principle, a reaction can involve more than two particles colliding, but because the probability of three or more nuclei to meet at the same time at the same place is much less than for two nuclei, such an event is exceptionally rare (see triple alpha process for an example very close to a three-body nuclear reaction).
Each finalist – in order: Nymphia Wind, Plane Jane and Sapphira Cristál – perform an original solo number and get interviewed by RuPaul. After a video highlighting her life and appearances on Drag Race, RuPaul presents the "Giving Us Life-time Achievement Award" to Cassandra Peterson. RuPaul announces that Nymphia and Sapphira will move ...
The 200 metre time almost always yields a "faster" average speed than a 100-metre race time, since the initial slow speed at the start is spread out over the longer distance. [4] The current men's Olympic and world champion is Noah Lyles , while the current women's Olympic champion is Julien Alfred , and the world champion is Sha'Carri Richardson .
[46] [47] Brain expansion (enlargement) between 0.8 and 0.2 Ma may have occurred due to the extinction of most African megafauna (which made humans feed from smaller prey and plants, which required greater intelligence due to greater speed of the former and uncertainty about whether the latter were poisonous or not), extreme climate variability ...
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