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Stimulus-selective tuning is determined by the receptor proteins and ion channels characterizing synapses of these neurons. Neurons can selectively respond to time-based differences between songs (e.g. syllable length or syllable-interval length) if they are post-synaptic to either fast-release ( ionotropic ) or slow-release ( metabotropic ...
A tutor, formally also called an academic tutor, is a person who provides assistance or tutelage to one or more people on certain subject areas or skills. The tutor spends a few hours on a daily, weekly, or monthly basis to transfer their expertise on the topic or skill to the student (also called a tutee).
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
A selective sweep can occur when a rare or previously non-existing allele that increases the fitness of the carrier (relative to other members of the population) increases rapidly in frequency due to natural selection. As the prevalence of such a beneficial allele increases, genetic variants that happen to be present on the genomic background ...
Cram schooling in Thailand has become almost mandatory to succeed in high school or in the entrance examinations of universities. Cram schools in Thailand, which are called tutoring institutes, tutoring schools, special tutoring, or special classes for example, are widespread throughout the country. Some of them do not have instructors in class ...
Since a selective sweep also results in selection of neighbouring alleles, the presence of a block of strong linkage disequilibrium might indicate a 'recent' selective sweep near the centre of the block. [110] Background selection is the opposite of a selective sweep. If a specific site experiences strong and persistent purifying selection ...
Genetic hitchhiking, also called genetic draft or the hitchhiking effect, [1] is when an allele changes frequency not because it itself is under natural selection, but because it is near another gene that is undergoing a selective sweep and that is on the same DNA chain.
Two useful introductions to the fundamental theory underlying the unit of selection issue and debate, which also present examples of multi-level selection from the entire range of the biological hierarchy (typically with entities at level N-1 competing for increased representation, i.e., higher frequency, at the immediately higher level N, e.g., organisms in populations or cell lineages in ...
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