Thelytoky can occur by different mechanisms, each of which has a different impact on the level of homozygosity.
22.
The basis for resistance has been established to be homozygosity of ?-Thalassemia gene within the local population.
23.
The type of parthenogenesis that likely occurs is homozygosity, expression of deleterious recessive alleles and often to developmental abnormalities.
24.
When deleterious recessive alleles are unmasked due to the increased homozygosity generated by inbreeding, this can cause inbreeding depression.
25.
Specifically, inbreeding has been found to decrease fertility as a direct result of increasing homozygosity of deleterious recessive alleles.
26.
A common cause of non-random mating is inbreeding, which causes an increase in homozygosity for all genes.
27.
Under the mechanism of natural selection, therefore, homozygosity would be favoured over heterozygosity, eventually leading to speciation.
28.
Conventional inbreeding procedures take six generations to achieve approximately complete homozygosity, whereas doubled haploidy achieves it in one generation.
29.
This analysis is often extended by analyzing autozygosity, an extension of homozygosity, in the genomes of affected individuals.
30.
Some organizations, most notably Dor Yeshorim, organize screening programs to prevent homozygosity for the genes that cause related diseases.
