Which of the following would form the basis for karyotyping studies in female?: (A) Phenotype abnormality, (B) Testoterone quantity, (C) Barr body, (D) Not recalled
Answer is C. Females contains two 'X'chromosomes. An extra 'X' chromosome contains Barrbody.Therefore , normal female contains one Barrbody. Males only single 'X' chromosome is present which results in absence of Barr body. so this helps in karyotyping studies