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t. e. Psychology is the study of mind and behavior. [1] Its subject matter includes the behavior of humans and nonhumans, both conscious and unconscious phenomena, and mental processes such as thoughts, feelings, and motives. Psychology is an academic discipline of immense scope, crossing the boundaries between the natural and social sciences.
Evolutionary biology. In biology, polymorphism [1] is the occurrence of two or more clearly different morphs or forms, also referred to as alternative phenotypes, in the population of a species. To be classified as such, morphs must occupy the same habitat at the same time and belong to a panmictic population (one with random mating).
It is commonly agreed that racism existed before the coinage of the word, but there is not a wide agreement on a single definition of what racism is and what it is not. Today, some scholars of racism prefer to use the concept in the plural racisms, in order to emphasize its many different forms that do not easily fall under a single definition.
v. t. e. In biology and medicine, feminization is the development in an organism of physical characteristics that are usually unique to the females of the species. This may represent a normal developmental process, contributing to sexual differentiation. Feminization can also be induced by environmental factors, and this phenomenon has been ...
Prism adaptation. Prism adaptation is a sensory-motor adaptation that occurs after the visual field has been artificially shifted laterally or vertically. It was first introduced by Hermann von Helmholtz in late 19th-century Germany as supportive evidence for his perceptual learning theory (Helmholtz, 1909/1962). [1]
Theodolite. A direct-readout theodolite, manufactured in the Soviet Union in 1958 and used for topographic surveying. A theodolite ( / θiˈɒdəˌlaɪt /) [1] is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes. The traditional use has been for land surveying, but it is ...
Match up between two DNA bases (adenine and thymine) showing hydrogen bonds (dashed lines) holding them together. In molecular biology, complementarity describes a relationship between two structures each following the lock-and-key principle. In nature complementarity is the base principle of DNA replication and transcription as it is a ...
Glossary of developmental biology. This glossary of developmental biology is a list of definitions of terms and concepts commonly used in the study of developmental biology and related disciplines in biology, including embryology and reproductive biology, primarily as they pertain to vertebrate animals and particularly to humans and other mammals.