Sperm genotype | Meiotic parameters | ||||||
---|---|---|---|---|---|---|---|

X | Y | XY | 0 | D | R_{x} | R_{y} | |

Probability |
½
DR
_{X} |
½
DR
_{y} | ½(1 – D)R_{x}R_{y} | ½(1 – D) | |||

Df(1)X-1
| 605 | 138 | 32 | 1983 | 0.534 | 0.266 | 0.061 |

Df(1)GA-90
| 979 | 301 | 88 | 2396 | 0.542 | 0.346 | 0.106 |

Df(1)bb158
| 1013 | 434 | 130 | 1735 | 0.583 | 0.418 | 0.179 |

Df(1)17-87
| 403 | 209 | 51 | 748 | 0.598 | 0.363 | 0.188 |

In(1)sc
^{4L}sc^{8R} | 809 | 401 | 113 | 1144 | 0.613 | 0.446 | 0.221 |

Df(1)y
^{X15} | 360 | 90 | 13 | 721 | 0.650 | 0.269 | 0.067 |

Df(1)bb74
| 2054 | 986 | 153 | 2656 | 0.691 | 0.346 | 0.166 |

Df(1)bb3a
| 2445 | 1540 | 330 | 2067 | 0.701 | 0.503 | 0.317 |

Df(1)bb452
| 3761 | 2905 | 57 | 243 | 0.966 | 0.551 | 0.426 |

The probabilities of the four classes of sperm are described in terms of the frequency of disjunction (*D*) and the probabilities of recovery of sperm that bear an *X* chromosome (*r _{X}*)or a