Table 1.
Overview of drive systems. This table provides a list of drive systems discussed in this review. Frequency of orientation or segregation towards the egg pole and the references that provided these data are provided. These frequencies were used to calculate a ratio indicating how often the selfish element orients/segregates towards the egg or the polar body. Rows are organized by whether univalents, bivalents or trivalents are observed in meiosis I. *Triploid female oysters were shown to produce 12% aneuploid offspring when mated to a diploid male [26]. This 12% was excluded from consideration for table 1 and the ratio of diploid and triploid offspring were used to calculate the ratio of preferential segregation.
| species name | genotype of driving element | orientation or segregation toward egg | ratio | reference | |
|---|---|---|---|---|---|
| Mus musculus | XO | 60% | 1.5 : 1 | LeMaire-Adkins et al. [27]; LeMaire-Adkins & Hunt [28] |
univalent |
| Caenorhabditis elegans | XXX | 29% | 1 : 2.4 | Cortes et al. [29] | |
| Crassostrea gigas | triploid | 35%* | 1 : 1.9 | Gong et al. [26] | bivalent |
| Mus musculus | heterozygous at centromeres | 62% | 1.6 : 1 | Iwata-Otsubo et al. [30] | |
| Mimulus guttatus | heterozygous for D allele | 58–100% | 1.4 : 1 | Fishman & Kelly [31] | |
| Zea mays | heterozygous for Ab10 | 83% | 4.9 : 1 | Buckler et al. [32] | |
| Mus musculus | heterozygous for HSR | 85% | 5.7 : 1 | Agulnik et al. [33] | |
| Mus musculus | heterozygous for R2d2 | 95% | 19 : 1 | Didion et al. [34] | |
| Mus musculus | heterozygous for Om | 56% | 1.3 : 1 | Wu et al. [35] | |
| Drosophila americana | heterozygous for metacentric fusion | 57–63% | 1.3–1.7 : 1 | Stewart et al. [25] | trivalent |
| Mus musculus | heterozygous for metacentric fusion | 40% | 1 : 1.5 | Chmátal et al. [37] |