ExaptationExaptation and the related term co-option describe a shift in the function of a trait during evolution. For example, a trait can evolve because it served one particular function, but subsequently it may come to serve another. Exaptations are common in both anatomy and behaviour. Bird feathers are a classic example. Initially they may have evolved for temperature regulation, but later were adapted for flight. When feathers were first used to aid in flight, that was an exaptive use.
Idealised populationIn population genetics an idealised population is one that can be described using a number of simplifying assumptions. Models of idealised populations are either used to make a general point, or they are fit to data on real populations for which the assumptions may not hold true. For example, coalescent theory is used to fit data to models of idealised populations. The most common idealized population in population genetics is described in the Wright-Fisher model after Sewall Wright and Ronald Fisher (1922, 1930) and (1931).
PredationPredation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill the host) and parasitoidism (which always does, eventually). It is distinct from scavenging on dead prey, though many predators also scavenge; it overlaps with herbivory, as seed predators and destructive frugivores are predators. Predators may actively search for or pursue prey or wait for it, often concealed.
International Convention on the Elimination of All Forms of Racial DiscriminationThe International Convention on the Elimination of All Forms of Racial Discrimination (ICERD) is a United Nations convention. A third-generation human rights instrument, the Convention commits its members to the elimination of racial discrimination and the promotion of understanding among all races. The Convention also requires its parties to criminalize hate speech and criminalize membership in racist organizations. The Convention also includes an individual complaints mechanism, effectively making it enforceable against its parties.
Personal trainerA personal trainer is an individual who creates and delivers safe and effective exercise programs for healthy individuals and groups, or those with medical clearance to exercise. They motivate clients by collaborating to set goals, providing meaningful feedback, and by being a reliable source for accountability. Trainers also conduct a variety of assessments beginning with a preparticipation health-screening and may also include assessments of posture and movement, flexibility, balance, core function, cardio-respiratory fitness, muscular fitness, body composition, and skill-related parameters (e.
Convention on the Elimination of All Forms of Discrimination Against WomenThe Convention on the Elimination of all Forms of Discrimination Against Women (CEDAW) is an international treaty adopted in 1979 by the United Nations General Assembly. Described as an international bill of rights for women, it was instituted on 3 September 1981 and has been ratified by 189 states. Over fifty countries that have ratified the Convention have done so subject to certain declarations, reservations, and objections, including 38 countries who rejected the enforcement article 29, which addresses means of settlement for disputes concerning the interpretation or application of the convention.
