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An individual who inherits such deleterious traits is colloquially referred to as inbred. The avoidance of expression of such deleterious recessive alleles caused by inbreeding, via inbreeding avoidance mechanisms, is the main selective reason for outcrossing.
"June", born in 1948, and "Tim Colt", born in 1943, were originally from New Zealand. June, who was the product of brother-sister incest, married Tim in 1966.The couple had seven children together: Martha, Frank, Paula, Cherry, Rhonda, Betty, and Charlie, before moving to Victoria in the 1970s. [1]
Evidence from the uniformity of mitochondrian DNA suggests that most of the common inbred mouse strains were probably derived from a single breeding female about 150–200 years ago." "Many of the most widely used inbred strains of rats were also developed during this period, several of them by Curtis and Dunning at the Columbia University ...
If the parents of an individual are not inbred themselves, the coefficient of inbreeding of the individual is one-half the coefficient of relationship between the parents. This can be verified in the previous example, as 12.5% is one-half of 25%, the coefficient of relationship between an uncle and a niece.
A 2007 study showed that inbred mice had significantly reduced survival when they were reintroduced into a natural habitat. [ 4 ] Inbreeding can result in inbreeding depression , which is the reduction of fitness of a given population due to inbreeding.
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Consanguine marriage is marriage between individuals who are closely related. Though it may involve incest, it implies more than the sexual nature of incest.In a clinical sense, marriage between two family members who are second cousins or closer qualifies as consanguineous marriage.
The earliest Cro-Magnon specimens also exhibit some features that are reminiscent of those found in Neanderthals. The first Cro-Magnons would have had darker skin tones than most modern Europeans; natural selection for lighter skin would not have begun until 30,000 years ago. Before the LGM, Cro-Magnons had overall low population density, tall ...