A black female with the 48, XXXX chromosome constitution.
The case of a 19-year-old severly mentally retarded Black female with a 48,XXXX chromosome constitution is reported. She had low-set ears, minimum webbing of the neck, small inverted nipples, and tapering of the extremities. All ten digital patterns of the fingers were ulnar loops, resulting in a marked reduction of dermal ridge counts.
D000328:Adult; D001741:Black or African American; D003878:Dermatoglyphics; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000150:complications* / Q000235:genetics; D007621:Karyotyping; D012729:Sex Chromosome Aberrations / Q000150:complications*; D013714:Tennessee