0 A recessive gene causes a particular characteristic only when it is passed on by both parents. -- recesywny
For reasons described previously, deleterious mutations that persist in a population are likely to be at least partially recessive in their effects on fitness.
If deleterious mutations tend to be more recessive than beneficial mutations, we will score a higher proportion of the beneficial than the deleterious mutations.
One possibility, which has some parallels in other species, is the presence of recessive lethal genes which cause embryonic death in the homozygote.
A case where such a mild form of inbreeding could be crucial is when mutations are extremely recessive.
We will assume that mutations are at least partly recessive (h 1\2).
The interaction between selection against partially recessive mutations and genetic drift in small populations also influences the rate of decay of neutral variation.
High inbreeding depression, selective interference among loci and the threshold selfing rate for purging recessive lethal mutations.
The first cases described were offspring of consanguineous parents who were both carriers of a recessive mutation.
