Inbreeding depression is considered to be largely due to expression of deleterious recessive mutations. Inbreeding depression is predominantly caused by the homozygous expression of recessive deleterious alleles. Inbreeding depression mostly arises due to the expression of deleterious recessive alleles. Similar programs are likely to reduce the potentially deleterious consequences of polypharmacy. Self-pollination can lead to inbreeding depression due to expression of deleterious recessive mutations. Inbreeding is avoided because it ordinarily leads to the expression of recessive deleterious alleles. Inbreeding is likely avoided because it leads to the expression of recessive deleterious alleles. Eliminating slightly deleterious mutations through inbreeding under moderate selection is not as effective. Another consequence is that hymenopterans may be more resistant to the deleterious effects of inbreeding. This is associated with the unmasking and elimination of severely deleterious recessive alleles. Tomoko Ohta also emphasized the importance of nearly neutral mutations, in particularly slightly deleterious mutations. Inbreeding can result in purging of deleterious alleles from a population through purifying selection. Thus, the genetic load of deleterious genes is purged relatively quickly. Pluralistic ignorance has been linked to a wide range of deleterious consequences. Dominance does not determine whether an allele is deleterious, neutral or advantageous.