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Table 2 Variability of recombination fraction (θ) in SSC-X regions of >10 cM among INRA F1 sows.

From: Recombinational landscape of porcine X chromosome and individual variation in female meiotic recombination associated with haplotypes of Chinese pigs

No. of sub-family1 F1 sows Number of offspring Marker intervals2
    SW980-SW1903 SW1903-SW2456 SW2456-SW259 UMNP71-SW1943 SW1943-SW1608 SW1608-S0218
    θ θ θ θ θ θ
1 910002 76 NA3 NA 0.184 0.303 4 0.105 0.158
  910009 72 NA NA 0.127 0.417 0.085 0.086
  910010 96 NA NA 0.106 0.271 0.137 0.108
  910013 55 NA NA 0.109 0.091 0.164 0.127
2 910014 83 0.228 0.316 0.241 0.253 0.146 0.064
  910016 38 0.184 0.342 0.132 0.211 0.132 0.184
  910020 69 0.206 0.232 0.159 0.159 0.159 0.059
3 910018 45 0.231 0.154 0.077 0.222 0.133 0.308
4 910069 62 0.213 0.295 0.161 0.145 0.097 0.210
  910071 68 0.246 0.123 0.154 0.206 0.132 0.091
  910072 63 0.206 0.111 0.175 0.206 0.143 0.143
  910074 83 0.241 0.190 0.177 0.120 0.181 0.157
5 910084 50 0.190 0.190 0.190 0.280 NA NA
  910086 27 0.222 0.231 0.269 0.148 NA NA
6 910095 62 0.177 0.113 0.210 0.242 0.081 0.161
  910096 42 0.171 0.250 0.175 0.262 0.024 0.073
  910097 37 0.243 0.081 0.027 0.189 0.189 0.054
Kosambi distance (cM)    22,86 21,63 16.58 24.20 13.17 12.80
Morton test    2,46 28.43 20.11 37.10 14.17 24.66
df    12 12 16 16 14 14
P value5    0.998 0.005 0.216 0.002 0.437 0.038
  1. 1Each sub-family consists of F1 full-sisters.
  2. 2The recombination coldspot SW259-UMNP71 was not considered.
  3. 3Not applicable because animal is not a double-heterozygote for both flanking markers.
  4. 4The θ of the F1 full-sisters within the first subfamily for the interval UMNP71-SW1943 are highlighted in bold because they showed the largest difference in θ (P = 0.0004).
  5. 5Probability for inter-individual variability of θ.