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.
When asked about research that has proved the deleterious effects of repeated inbreeding
-- namely, immune deficiency, mental impairment and strabismus, a condition that causes the white tigers to be cross- eyed -- Khan repeated his contention that the practice was a necessary evil.
Such fluctuations affect the numbers of families available for progeny testing and selection, and can have consequences for genetic gains and inbreeding
. We used stochastic computer simulations to understand how genetic gains and levels of inbreeding
are affected when greenlip (Haliotis laevigata) breeding programs encounter varying severity and frequency of reproductive failure.
All "breeds" were originally created with some degree of inbreeding
and linebreeding to "fix" certain desired traits that were seen in the foundation animals.
Mating between closely related (than the average of population) individuals is termed as inbreeding
and is unavoidable in commercial breeding programmes in dairy cattle.
to Northern Dancer is now commonplace rather than the exception but even so, sending a Stravinsky mare to Peintre Celebre, which results in tight inbreeding
to Nureyev, might have been regarded as being on the risky side in some quarters.
Though the genetic harms of inbreeding
are well known, kin marriages produce (on an average) more viable offspring than the (non-inbreeding) alternative of no marriage.
They want to find out if decreasing numbers of adders in the region has led to inbreeding
They might simply mate more frequently, and allow the 'best sperm to win', which would work if winning sperm are from males who have themselves avoided inbreeding
depression," Gage added.
Charles Darwin's family was a living human example of a theory that he developed about plants: that inbreeding
could affect negatively the health and number of resulting offspring.
However, participating institutions have expressed concerns regarding space allocation, target population size (TPS), breeding restrictions, inbreeding
depression, and harvest in relation to future population availability and viability.
RI strains generally are generated by repeatedly inbreeding
brother-sister pairs from the second-generation ([F.sub.2]) offspring of two genetically distinct parent inbred strains.