TABLE 1

Map distances and NPD ratios from translocation and nontranslocation diploids

Map distance (cM)a
Chromosome III markersbChromosome VII markersb
HIS4-LEU2cLEU2-MATMAT-THR4LYS5-MET13MET13-CYH2CYH2-TRP5
StrainPNTcMPNTcMPNTcMPNTcMPNTcMPNTcM
NH598804322811.95631843826.8709331216.1623536619.9807121710.93484165543.1
NH607781222911.96001637323.7672631017.5574741222.9769023111.53114266745.0
NPD ratiob
NH5980.40 ± 0.230.51 ± 0.130.20 ± 0.110.22 ± 0.10NA0.36 ± 0.06
NH6070.26 ± 0.180.65 ± 0.170.38 ± 0.150.22 ± 0.09NA0.30 ± 0.06
HIS4-MATLEU2-THR4LYS5-TRP5
Map
 distanceNPD ratioMap
 distanceNPD ratioMap
 distanceNPD ratio
NH598  37.00.57 ± 0.10  43.60.50 ± 0.08  64.90.68 ± 0.12
NH607  35.20.57 ± 0.11  41.20.75 ± 0.12  70.10.86 ± 0.13
  • a Spore viability for NH598 was 94.7% (1305 tetrads) and for NH607, 96.4% (1282 tetrads).

  • b Tests for statistical significance were performed using the program available at http://groik.com/stahl/. NPD ratios were calculated by the Papazian equation (Papazian 1952) using the software at this website. NA, not applicable because too few N tetrads.

  • c Map distances were calculated using the Perkins formula (Perkins 1949). P, parental ditype; N, nonparental ditype; T, tetratype.