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Selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics) by choosing which typically animal or plant males and females will sexually reproduce and have offspring together.
Though the selective pressures involved in breeding dogs for dogfighting appear to be a significant component of gameness, dogfighters disagree about the importance of genetics to the trait. While dogs that exhibit a high degree of gameness are more prone to have offspring who are also game, the inheritance of the trait is not consistent. [3]
The aim of breeding back programs is to restore the wild traits which may have been unintentionally preserved in the lineages of domesticated animals. Commonly, not only the new animal's phenotype, but also its ecological capacity, are considered in back-breeding projects, as hardy, "bred back" animals may be used in certain conservation ...
Culling is: ... the rejection or removal of inferior individuals from breeding. The act of selective breeding. As used in the practice of breeding pedigree cats, this refers to the practice of spaying or neutering a kitten or cat that does not measure up to the show standard (or other standard being applied) for that breed.
Also called functionalism. The Darwinian view that many or most physiological and behavioral traits of organisms are adaptations that have evolved for specific functions or for specific reasons (as opposed to being byproducts of the evolution of other traits, consequences of biological constraints, or the result of random variation). adaptive radiation The simultaneous or near-simultaneous ...
We've all seen the story, and we know how it goes: a young model finds herself staring down the barrel of 27, the age at which the fashion industry ties models to trees and gives them the Old ...
Selective breeding has been responsible for large increases in productivity. For example, in 2007, a typical broiler chicken at eight weeks old was 4.8 times as heavy as a bird of similar age in 1957, [36] while in the thirty years to 2007, the average milk yield of a dairy cow in the United States nearly doubled. [36]
Their hair also has a special name, and a special job. The hair is called "dossan" and it provides the cow with insulation, important in the frigid cold winters of the Scottish Highlands where ...