Fig. 4

Haplotypes of BC1 progeny from a single high fecundity dysgenic mother. a Haplotypes of the third chromosome in progeny of the 4029 F1 mother is typical of most chromosomes with no cluster of recombination. b Haplotypes of the third chromosome in progeny of the 5011 F1 mother identify a common recombination breakpoint in most of the progeny and reciprocal products of recombination in equal frequency (Binomial test, p > 0.05). Arrows indicate samples that were tested for retention of the Polyphemus insertion. Black arrows indicate absence of the Polyphemus insertion. The red arrow indicates a non-recombinant sample with an excision scar identified by sequencing. c Haplotypes of the X chromosome in progeny of the 4029 F1 mother indicate a common recombination breakpoint in half of the progeny and extreme transmission distortion of the distal portion of the chromosome (227 markers 0.5–21.4 MB, Binomial test, p < 1E-07). The proximal region of the chromosome shows no transmission distortion (86 markers 21.5–29.0 Mb Binomial test, p > 0.5)