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The word pedigree is a corruption of the Anglo-Norman French pé de grue or "crane's foot", either because the typical lines and split lines (each split leading to different offspring of the one parent line) resemble the thin leg and foot of a crane [3] or because such a mark was used to denote succession in pedigree charts.
Genetics tries to identify which traits are inherited and to explain how these traits are passed from generation to generation. Some traits are part of an organism's physical appearance, such as eye color or height. Other sorts of traits are not easily seen and include blood types or resistance to diseases. Some traits are inherited through ...
Mendelian traits behave according to the model of monogenic or simple gene inheritance in which one gene corresponds to one trait. Discrete traits (as opposed to continuously varying traits such as height) with simple Mendelian inheritance patterns are relatively rare in nature, and many of the clearest examples in humans cause disorders.
Heredity of phenotypic traits: a father and son with prominent ears and crowns. DNA structure. Bases are in the centre, surrounded by phosphate–sugar chains in a double helix. In humans, eye color is an example of an inherited characteristic: an individual might inherit the "brown-eye trait" from one of the parents. [1]
Since a large variety of coat patterns exist within the various cat breeds, the cat is an excellent animal to study the coat genetics of hair growth and coloration. [10] Several genes interact to produce cats' hair color and coat patterns. Different combinations of these genes give different phenotypes.
Genomic imprinting, which determines whether some genes inherited from the mother and father get expressed. [10] The expressivity of a gene can be influenced by the environmental conditions. [11] For example, pigmentation in the fur of Himalayan rabbits is determined by the C gene, the activity of which is dependent on temperature. [12]
Semi-permanent but inconspicuous or invisible traits are vaccination and laser hair removal. Perms, tattoos, scars, and amputations are semi-permanent and highly visible. Applying makeup, nail polish, dying one's hair, applying henna to the skin, and tooth whitening are not examples of acquired traits. They change the appearance of a facet of ...
Dogs and sheep were among the first animals to be domesticated. The domestication of vertebrates is the mutual relationship between vertebrate animals, including birds and mammals, and the humans who influence their care and reproduction. [1] Charles Darwin recognized a small number of traits that made domesticated species different from their ...
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