Table 3. Association of sequence and gene parameters with the local recombination rate.
| Parameter | Correlation | Effective sample size | p |
| Physical distance from center of linkage group | 0.501 | 116.8 | <0.00001** |
| GC content | 0.282 | 119.1 | 0.00188* |
| Simple repeat content | 0.302 | 106.5 | 0.00163* |
| Gene content | 0.349 | 124.6 | 0.00007** |
| Gene distance | −0.429 | 121.9 | <0.00001** |
| Protein size | 0.140 | 142.5 | 0.09640 |
| Number of exons per gene | 0.044 | 137.3 | 0.60965 |
| Exon size | 0.098 | 118.6 | 0.29026 |
| Intron size | −0.467 | 122.3 | <0.00001** |
| d A (N. vitripennis/N. giraulti)a | −0.199 | 55.8 | 0.14239 |
| d A (N. vitripennis/N. longicornis)a | −0.221 | 89.2 | 0.03753 |
| ω (N. vitripennis/N. giraulti)b | −0.302 | 47.9 | 0.03695 |
| ω (N. vitripennis/N. longicornis)b | −0.317 | 89.6 | 0.00236* |
Sequence and gene parameters tested for their association with the local recombination rate in the Nasonia vitripennis parasitoid wasp genome.
The analyses were based on data from 125 non-overlapping windows of two consecutive marker clusters each and an average width of 3.4 cM. To account for spatial autocorrelation of the tested parameters, we applied Dutilleul's modified t test [29] using ranked data. One and two asterisks, respectively, indicate significant (α = 0.05) and highly significant (α = 0.01) correlations after Bonferroni correction for 13 simultaneous tests.
a
d A = amino acid divergence.
b
ω = ratio of non-synonymous (amino acid replacing) to synonymous (silent) substitution rates.