Robertsonian translocations in man: evidence for prezygotic selection.
D000022:Abortion, Spontaneous; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D002901:Chromosomes, Human, 13-15; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome; D005260:Female; D006579:Heterozygote; D006801:Humans; D008297:Male; D010375:Pedigree; D011247:Pregnancy; D012641:Selection, Genetic