Sex Chromatin of Cone Cells of Human Retina

See allHide authors and affiliations

Science  31 Dec 1965:
Vol. 150, Issue 3705, pp. 1828-1829
DOI: 10.1126/science.150.3705.1828


Each retinal cone cell of the female contains a sex-chromatin body not present in coinparable material from the male. Therefore the lack of detectable "patch" formation in female heterozygotes for red color-blindness (as expected from the X-inactivation hypothesis) cannot be attributed to failure of Barr-body formation.