title: Chromosomal abnormalities in ova and zygotes from normal ewes mated to normal rams.
mesh_terms: D000818:Animals; D002869:Chromosome Aberrations; D005260:Female; D007621:Karyotyping; D008297:Male; D010063:Ovum / Q000166:cytology*; D012756:Sheep / Q000235:genetics*; D015053:Zygote / Q000166:cytology*