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Hereditary equine regional dermal asthenia (HERDA), also known as hyperelastosis cutis (HC), is an inherited autosomal recessive connective tissue disorder. It develops from a homozygous recessive mutation that weakens collagen fibers that allow the skin of the animal to stay connected to the rest of the animal.
Ethology, the study of animal behaviour, has been a topic of interest since the 1930s.The pioneers of the field include Dutch biologist Nikolaas Tinbergen and Austrian biologists Karl von Frisch and Konrad Lorenz [13] [14] [15] (the three won the Nobel Prize in Physiology or Medicine in 1973 for their discoveries concerning organization and elicitation of individual and social behaviour ...
Tail biting; biting or chewing the tail of another animal. [37] Tail chasing; an animal chasing its own tail in circles. [38] Toe pecking; one bird pecking the toes of another. [39] Trichotillomania; an animal pulling out its own fur, hair or wool, often followed by eating it. [40] Urine drinking; drinking urine. [10]
Heredity, also called inheritance or biological inheritance, is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents.
Investigators in animal behaviour genetics can carefully control for environmental factors and can experimentally manipulate genetic variants, allowing for a degree of causal inference that is not available in studies on human behavioural genetics. [15] In animal research selection experiments have often been employed.
Epigenetic mechanisms. In biology, epigenetics is the study of heritable traits, or a stable change of cell function, that happen without changes to the DNA sequence. [1] The Greek prefix epi-(ἐπι-"over, outside of, around") in epigenetics implies features that are "on top of" or "in addition to" the traditional (DNA sequence based) genetic mechanism of inheritance. [2]
In medicine, genetic susceptibility to a disease refers to a genetic predisposition to a health problem, [1] which may eventually be triggered by particular environmental or lifestyle factors, such as tobacco smoking or diet. Genetic testing is able to identify individuals who are genetically predisposed to certain diseases.
Genetic epidemiology is the study of the role of genetic factors in determining health and disease in families and in populations, and the interplay of such genetic factors with environmental factors. Genetic epidemiology seeks to derive a statistical and quantitative analysis of how genetics work in large groups.