Beware recessive genes.
D000015:Abnormalities, Multiple / Q000235:genetics; D001766:Blindness / Q000235:genetics*; D003103:Coloboma / Q000235:genetics; D005260:Female; D005808:Genes, Recessive; D008040:Genetic Linkage; D006801:Humans; D007223:Infant; D008297:Male; D008957:Models, Genetic; D010375:Pedigree; D012160:Retina / Q000002:abnormalities; D012174:Retinitis Pigmentosa / Q000235:genetics; D014960:X Chromosome