| selective |
Natural selection is a process by which biological populations are altered over time, as a result of the propagation of heritable traits that affect the capacity of individual organisms to survive and reproduce. It is one of several mechanisms that give rise to the evolution of biological species (other mechanisms include genetic drift and gene flow. ...
Ãâó: en.wikipedia.org/wiki/Selective
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| selenodont |
The tooth has a crescent-shaped ridge or ridges.
Ãâó: en.wikipedia.org/wiki/Molar_(tooth)
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| selection |
In the context of evolution, certain traits or alleles of a species may be subject to selection. Under selection, individuals with advantageous or "adaptive" traits tend to be more successful than their peers reproductively--meaning they contribute more offspring to the succeeding generation than others do. Selection therefore increases the prevalence of these traits, because offspring inherit traits from their parents. ...
Ãâó: en.wikipedia.org/wiki/Selection
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| selective serotonin reuptake inhibitor |
Selective serotonin reuptake inhibitors (SSRIs) are a class of antidepressants. They act within the brain to increase the amount of the neurotransmitter, serotonin (5-hydroxytryptamine or 5-HT), in the synaptic gap by inhibiting its reuptake. One notable characteristic of SSRIs is that, unlike other classes of antidepressants, SSRIs were rationally designed drugs. Instead of being discovered by accident, SSRIs were specifically designed while considering the biological causes of depression. ...
Ãâó: en.wikipedia.org/wiki/Selective_serotonin_reuptake...
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| self-abuse |
Masturbation is the manual excitation of the sexual organs, most often to the point of orgasm. It can refer to excitation either by oneself or by another (see mutual masturbation), but commonly refers to such activities performed alone. It is part of a larger set of activities known as autoeroticism, which also includes the use of sex toys and non-genital stimulation. There are also masturbation machines used to simulate intercourse. ...
Ãâó: en.wikipedia.org/wiki/Self-abuse
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