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A hitchhiker mutation (or passenger mutation in cancer biology) may itself be neutral, advantageous, or deleterious. [ 7 ] Recombination can interrupt the process of genetic hitchhiking, ending it before the hitchhiking neutral or deleterious allele becomes fixed or goes extinct. [ 6 ]
Spontaneous recovery is associated with the learning process called classical conditioning, in which an organism learns to associate a neutral stimulus with a stimulus which produces an unconditioned response, such that the previously neutral stimulus comes to produce its own response, which is usually similar to that produced by the unconditioned stimulus.
Also in 2016, Quizlet launched "Quizlet Live", a real-time online matching game where teams compete to answer all 12 questions correctly without an incorrect answer along the way. [15] In 2017, Quizlet created a premium offering called "Quizlet Go" (later renamed "Quizlet Plus"), with additional features available for paid subscribers.
Differential item functioning (DIF) is a statistical property of a test item that indicates how likely it is for individuals from distinct groups, possessing similar abilities, to respond differently to the item. It manifests when individuals from different groups, with comparable skill levels, do not have an equal likelihood of answering a ...
A person was arrested after attempting to climb a temporary fence near the White House this morning, according to a U.S. Secret Service spokesperson. The Secret Service said the person was ...
The pre-testing effect, also known as errorful generation or pre-questioning, is a related but distinct category where testing material before the material has been learned appears to lead to better subsequent learning performance than would have been the case without the pre-test, provided that feedback is given as to the correct answers once ...
The results also showed that low-density lipoprotein cholesterol (LDL cholesterol, or “bad” cholesterol) and total cholesterol fluctuations were associated with significantly faster declines ...
“An individual on a mission may at the end have questions about the morality of what went on, and most guys reconcile that fairly rapidly,” said Thomas S. Jones, a retired combat-decorated Marine major general. He is fiercely fond of young Marines and runs a retreat for the wounded, Semper Fi Odyssey, where he sees many cases of moral ...