title: Meiotic abnormalities in backcross lines of hybrid Haemonchus.
mesh_terms: D000818:Animals; D002869:Chromosome Aberrations; D003433:Crosses, Genetic; D005260:Female; D006189:Haemonchus / Q000235:genetics* / Q000502:physiology; D008297:Male; D008540:Meiosis; D009866:Oogenesis; D013091:Spermatogenesis; D014251:Trichostrongyloidea / Q000235:genetics*