Table 5 . Multiple QTL Mapping.
| Phenotype | Chr. | Position (cM) | LOD scorea | Position (Mb) | 1.5 LOD interval (Mb) | % Phen. Varianceb | Additivec | Dominanced | Effecte |
|---|---|---|---|---|---|---|---|---|---|
| Rel. right testis weight | 2 | 47.5 | 6.91 | 80.7 | 68.4–107.8 | 7.40 | 0.38 (±0.07) | 0.17 (±0.10) | Dom. additive |
| 4 | 30 | 5.31 | 69.9 | 28.8–112.6 | 5.62 | −0.35 (±0.08) | 0.24 (±0.11) | Cast. recessive | |
| 10 | 51 | 3.53 | 106.4 | 49.7–127.7 | 3.68 | 0.31 (±0.08) | 0.02 (±0.11) | Dom. additive | |
| M/Y | 0 | 7.45 | — | — | 8.01 | −0.86 (±0.15) | — | Cast. | |
| PARf | 0 | 14.44 | — | — | 16.37 | — | — | — | |
| Sperm density | PARf | 0 | 5.59 | — | — | 8.12 | — | — | — |
| Sperm head PC1g | 2 | 97.7 | 4.28 | 179.0 | 142.3–179.0 | 6.23 | 0.01 (±0.003) | −0.007 (±0.005) | Cast. recessive |
| PARf | 3 | 4.00 | — | — | 5.81 | — | — | — | |
| Sperm head PC2g | 4 | 16.1 | 4.90 | 41.7 | 28.8–77.8 | 4.38 | −0.01 (±0.002) | 0.004 (±0.003) | Dom. additive |
| 5 | 12 | 3.80 | 32.5 | 9.01–148.4 | 3.37 | −0.01 (±0.002) | −0.004 (±0.003) | Dom. recessive | |
| M/Y | 0 | 17.31 | — | — | 17.13 | −0.03 (±0.003) | — | Dom. | |
| X | 12 | 6.33 | 33.5 | 10.2–49.5 | 5.72 | 0.01 (±0.002) | — | Cast. | |
| X | 48 | 8.25 | 113.5 | 92.3–162.7 | 7.57 | 0.01 (±0.002) | — | Cast. | |
| Semin. tubule areah | 2 | 45 | 9.58 | 77.0 | 64.1–107.8 | 11.38 | −2607.1 (±383.5) | 155.3 (±582.6) | Cast. additive |
| X | 21 | 4.81 | 47.7 | 16.0–67.7 | 5.50 | 1280.8 (±269.9) | — | Dom. | |
| PARf | 0 | 10.71 | — | — | 12.85 | — | — | — | |
| Headless/taillessi | 6 | 42 | 3.95 | 111.9 | 78.6–137.6 | 5.29 | −0.05 (±0.01) | −0.03 (±0.02) | Dom. recessive |
| X | 42 | 10.30 | 97.3 | 52.0–133.6 | 14.53 | 0.06 (±0.01) | — | Cast. | |
| Amorph. sperm headi | 2 | 87 | 4.73 | 169.9 | 142.3–179.0 | 5.98 | 0.04 (±0.01) | 0.001 (±0.01) | Cast. additive |
| 9 | 3 | 8.59 | 16.8 | 3.1–31.4 | 11.20 | 0.04 (±0.01) | −0.04 (±0.01) | Cast. recessive | |
| X | 60 | 4.63 | 145.5 | 84.0–162.9 | 5.85 | 0.03 (±0.01) | — | Cast. | |
| Total abnormal spermi | X | 48 | 9.33 | 113.5 | 92.3–151.3 | 13.90 | 0.08 (±0.01) | — | Cast. |
a
All QTL are significant at a 5% genome-wide significance threshold.
b
Percentage of phenotypic variance explained by the QTL.
c
Additive effect. Half the difference between the phenotype averages of the two homozygotes.
d
Dominance deviation. Difference between the phenotype average of the heterozygotes and the midpoint of the phenotype averages of the two homozygotes.
e
Subspecies allele associated with sterility and the effect of that allele. Dom., M. m. domesticusWSB; Cast., M. m. castaneusCAST.
f
Effects of QTL in the PAR are not reported as they combine the effects across both cross directions.
g
Transformed to normal quantiles.
h
Residual trait scores of seminiferous tubule area regressed on testis weight.
i
Arcsine squareroot transformed.