Mosaics and chimaeras.
D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D003582:Cytogenetics; D005260:Female; D005826:Genetics, Medical; D006801:Humans; D007621:Karyotyping; D008540:Meiosis; D008938:Mitosis; D009030:Mosaicism; D011247:Pregnancy; D011336:Probability; D013223:Statistics as Topic; D014427:Twins