The family also believed that inbreeding was central to both preserving the family fortune and ensuring “purity of blood.”
Inbreeding is the sexual reproduction of offspring from the mating or breeding of individuals or organisms that are closely related genetically. 
: the interbreeding of closely related individuals especially to preserve and fix desirable characters of and to eliminate unfavorable characters from a stock ...
Inbreeding depression is the reduced biological fitness in a given population as a result of inbreeding, or breeding of related individuals. Population biological ...
INBREEDING IN HUMANS . Eugene Ochap. Genetics 535. 3-22-04 . Inbreeding is simply defined as the mating of relatives. It is a mating system in which individuals ...
Inbreeding. Inbreeding is defined as mating between related individuals. It is also called consanguinity, meaning "mixing of the blood." Although some plants ...
The people, though still sturdy, seem to have become somewhat dull from inbreeding and to have required an infusion of altogether different blood from without.
Inbreeding is the mating together of closely related dogs, for example mother/son, father/daughter and sibling/sibling matings. For breeders, it is a useful way of ...
Inbreeding is a term in genetics, meaning the crossing (mating) of closely related animals or plants. Self-fertilisation in plants is the most extreme kind of inbreeding.
inbreeding [in´brēd-ing] the mating of closely related individuals or of individuals having closely similar genetic constitutions. in·breed·ing (in'brēd-ing), 1 ...